Tang dynasty - wikipedia Tang dynasty For other uses, see Tang dynasty ( disambiguation ). Tang 唐 618 -- 907 690 -- 705 : Zhou dynasty Tang dynasty c. 700 Capital Chang'an ( 618 -- 684 and 705 -- 904 ) Luoyang ( 684 -- 705 and 904 -- 907 ) Languages Middle Chinese Religion Chinese Buddhism Taoism Chinese folk religion Nestorianism Manichaeism Zoroastrianism Government Monarchy Emperor 618 -- 626 ( first ) Emperor Gaozu 626 -- 649 Emperor Taizong 712 -- 756 Emperor Xuanzong 904 -- 907 ( last ) Emperor Ai History Established June 18, 618 Usurped by Wu Zetian 690 -- 705 An Lushan Rebellion 755 -- 763 Abdication in favour of the Later Liang June 1, 907 Area 715 5,400,000 km ( 2,100,000 sq mi ) Population 7th century est. 50 million 9th century est. 80 million Currency Chinese coin Chinese cash Preceded by Succeeded by Sui dynasty Eastern Turkic Khaganate Western Turkic Khaganate Goguryeo Later Liang Wu Wuyue Min Former Shu Khitans October 8, 690 -- March 3, 705. December 16, 755 -- February 17, 763. Tang dynasty `` Tang dynasty '' in Han characters Chinese 唐 朝 Transcriptions Standard Mandarin Hanyu Pinyin Táng cháo Gwoyeu Romatzyh Tarng chaur Wade -- Giles T'ang ch'ao IPA ( thǎŋ ʈʂhǎu ) Wu Romanization Dáõn záu Yue : Cantonese Yale Romanization Tong chiu IPA ( thɔ̏ːŋ tshȉːu ) Jyutping Tong ciu Southern Min Tâi - lô Tông tiâu Middle Chinese Middle Chinese dang djew History of China ANCIENT Neolithic c. 8500 -- c. 2070 BC Xia dynasty c. 2070 -- c. 1600 BC Shang dynasty c. 1600 -- c. 1046 BC Zhou dynasty c. 1046 -- 256 BC Western Zhou Eastern Zhou Spring and Autumn Warring States IMPERIAL Qin dynasty 221 -- 206 BC Han dynasty 206 BC -- 220 AD Western Han Xin dynasty Eastern Han Three Kingdoms 220 -- 280 Wei, Shu and Wu Jin dynasty 265 -- 420 Western Jin Eastern Jin Sixteen Kingdoms Northern and Southern dynasties 420 -- 589 Sui dynasty 581 -- 618 Tang dynasty 618 -- 907 ( Second Zhou dynasty 690 -- 705 ) Five Dynasties and Ten Kingdoms 907 -- 960 Liao dynasty 907 -- 1125 Song dynasty 960 -- 1279 Northern Song Western Xia Southern Song Jin Yuan dynasty 1271 -- 1368 Ming dynasty 1368 -- 1644 Qing dynasty 1644 -- 1912 MODERN Republic of China 1912 -- 1949 People 's Republic of China 1949 -- present Related articles Chinese historiography Timeline of Chinese history Dynasties in Chinese history Linguistic history Art history Economic history Education history Science and technology history Legal history Media history Military history Naval history view talk The Tang dynasty or the Tang Empire ( Chinese : 唐 朝 ) was an imperial dynasty of China preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period. It is generally regarded as a high point in Chinese civilization, and a golden age of cosmopolitan culture. Its territory, acquired through the military campaigns of its early rulers, rivaled that of the Han dynasty, and the Tang capital at Chang'an ( present - day Xi'an ) was the most populous city in the world. The dynasty was founded by the Lǐ family ( 李 ), who seized power during the decline and collapse of the Sui Empire. The dynasty was briefly interrupted when Empress Wu Zetian seized the throne, proclaiming the Second Zhou dynasty ( 690 -- 705 ) and becoming the only Chinese empress regnant. In two censuses of the 7th and 8th centuries, the Tang records estimated the population by number of registered households at about 50 million people. Yet, even when the central government was breaking down and unable to compile an accurate census of the population in the 9th century, it is estimated that the population had grown by then to about 80 million people. With its large population base, the dynasty was able to raise professional and conscripted armies of hundreds of thousands of troops to contend with nomadic powers in dominating Inner Asia and the lucrative trade routes along the Silk Road. Various kingdoms and states paid tribute to the Tang court, while the Tang also conquered or subdued several regions which it indirectly controlled through a protectorate system. Besides political hegemony, the Tang also exerted a powerful cultural influence over neighboring East Asian states such as those in Japan and Korea as well as Vietnam. The Tang dynasty was largely a period of progress and stability in the first half of the dynasty 's rule, until the An Lushan Rebellion and the decline of central authority in the later half of the dynasty. Like the previous Sui dynasty, the Tang dynasty maintained a civil service system by recruiting scholar - officials through standardized examinations and recommendations to office. This civil order was undermined by the rise of regional military governors known as jiedushi during the 9th century. Chinese culture flourished and further matured during the Tang era ; it is considered the greatest age for Chinese poetry. Two of China 's most famous poets, Li Bai and Du Fu, belonged to this age, as did many famous painters such as Han Gan, Zhang Xuan, and Zhou Fang. There was a rich variety of historical literature compiled by scholars, as well as encyclopedias and geographical works. The adoption of the title Tängri Qaghan by the Tang Emperor Taizong in addition to his title as emperor was eastern Asia 's first `` simultaneous kingship ''. There were many notable innovations during the Tang, including the development of woodblock printing. Buddhism became a major influence in Chinese culture, with native Chinese sects gaining prominence. However, Buddhism would later be persecuted by the state, subsequently declining in influence. Although the dynasty and central government were in decline by the 9th century, art and culture continued to flourish. The weakened central government largely withdrew from managing the economy, though the country 's mercantile affairs stayed intact and commercial trade continued to thrive regardless, at least until agrarian rebellions in the latter half of the 9th century brought the dynasty to its knees, resulting in damaging atrocities such as the Guangzhou Massacre. Contents 1 History 1.1 Establishment 1.2 Wu Zetian 's usurpation 1.3 Emperor Xuanzong 's reign 1.4 An Lushan Rebellion and catastrophe 1.5 Rebuilding and recovery 1.6 End of the dynasty 2 Administration and politics 2.1 Initial reforms 2.2 Imperial examinations 2.3 Religion and politics 2.4 Taxes and the census 3 Military and foreign policy 3.1 Protectorates and tributaries 3.2 Soldiers and conscription 3.3 Turkic and Western regions 3.4 East Asia 4 Economy 4.1 Silk Road 4.2 Seaports and maritime trade 5 Culture and society 5.1 Leisure 5.2 Chang'an, the Tang capital 5.3 Literature 5.4 Religion and philosophy 5.5 Position of women 5.6 Cuisine 6 Science and technology 6.1 Engineering 6.2 Woodblock printing 6.3 Medicine 6.4 Cartography 6.5 Alchemy, gas cylinders, and air conditioning 7 Historiography 8 See also 9 Notes 10 References 10.1 Citations 10.2 Works cited 11 Further reading 12 External links History Further information : Timeline of the Tang dynasty Establishment Main article : Transition from Sui to Tang Portrait painting of Emperor Yang of Sui, commissioned in 643 by Taizong, painted by Yan Liben ( 600 -- 673 ) The Li family belonged to the northwest military aristocracy prevalent during the Sui dynasty and claimed to be paternally descended from the Daoist founder, Laozi ( whose personal name was Li Dan or Li Er ), the Han dynasty General Li Guang, and Western Liang ruler Li Gao. This family was known as the Longxi Li lineage ( 隴西 李 氏 ), which includes the Tang poet Li Bai. The Tang emperors also had Xianbei maternal ancestry, from Emperor Gaozu of Tang 's Xianbei mother, Duchess Dugu. Li Yuan was Duke of Tang and governor of Taiyuan during the Sui dynasty 's collapse, which was caused in part by the Sui failure to conquer the northern part of the Korean peninsula during the Goguryeo -- Sui War. He had prestige and military experience, and was a first cousin of Emperor Yang of Sui ( their mothers were sisters ). Li Yuan rose in rebellion in 617, along with his son and his equally militant daughter Princess Pingyang ( d. 623 ), who raised and commanded her own troops. In winter 617, Li Yuan occupied Chang'an, relegated Emperor Yang to the position of Taishang Huang or retired emperor, and acted as regent to the puppet child - emperor, Emperor Gong of Sui. On the news of Emperor Yang 's murder by General Yuwen Huaji on June 18, 618, Li Yuan declared himself the emperor of a new dynasty, the Tang. Li Yuan, known as Emperor Gaozu of Tang, ruled until 626, when he was forcefully deposed by his son Li Shimin, the Prince of Qin. Li Shimin had commanded troops since the age of 18, had prowess with bow and arrow, sword and lance and was known for his effective cavalry charges. Fighting a numerically superior army, he defeated Dou Jiande ( 573 -- 621 ) at Luoyang in the Battle of Hulao on May 28, 621. In a violent elimination of royal family due to fear of assassination, Li Shimin ambushed and killed two of his brothers, Li Yuanji ( b. 603 ) and Crown prince Li Jiancheng ( b. 589 ), in the Xuanwu Gate Incident on July 2, 626. Shortly thereafter, his father abdicated in his favor and Li Shimin ascended the throne. He is conventionally known by his temple name Taizong. Emperor Taizong ( r. 626 -- 649 ) receives Gar Tongtsen Yülsung, ambassador of the Tibetan Empire, at his court ; painted in 641 by Yan Liben ( 600 -- 673 ) Although killing two brothers and deposing his father contradicted the Confucian value of filial piety, Taizong showed himself to be a capable leader who listened to the advice of the wisest members of his council. In 628, Emperor Taizong held a Buddhist memorial service for the casualties of war, and in 629 he had Buddhist monasteries erected at the sites of major battles so that monks could pray for the fallen on both sides of the fight. This was during the Tang campaign against the Eastern Turks, a Turkic Khaganate that was destroyed after the capture of its ruler, Illig Qaghan, by the famed Tang military officer Li Jing ( 571 -- 649 ), who later became a Chancellor of the Tang dynasty. With this victory, the Turks accepted Taizong as their khagan, a title rendered as Tian Kehan in addition to his rule as emperor of China under the traditional title `` Son of Heaven ''. Wu Zetian 's usurpation Palace ladies in a garden from a mural of Prince Li Xian 's tomb in the Qianling Mausoleum, where Wu Zetian was also buried in 706 Main article : Zhou dynasty ( 690 -- 705 ) Although she entered Emperor Gaozong 's court as the lowly consort Wu Zhao, Wu Zetian rose to the highest seat of power in 690, establishing the short - lived Wu Zhou. Empress Wu 's rise to power was achieved through cruel and calculating tactics : a popular conspiracy theory stated that she killed her own baby girl and blamed it on Gaozong 's empress so that the empress would be demoted. Emperor Gaozong suffered a stroke in 655, and Wu began to make many of his court decisions for him, discussing affairs of state with his councilors, who took orders from her while she sat behind a screen. When Empress Wu 's eldest son, the crown prince, began to assert his authority and advocate policies opposed by Empress Wu, he suddenly died in 675. Many suspected he was poisoned by Empress Wu. Although the next heir apparent kept a lower profile, in 680 he was accused by Wu of plotting a rebellion and was banished. ( He was later obliged to commit suicide. ) In 683, Emperor Gaozong died. He was succeeded by Emperor Zhongzong, his eldest surviving son by Wu. Zhongzong tried to appoint his wife 's father as chancellor : after only six weeks on the throne, he was deposed by Empress Wu in favor of his younger brother, 12 - year - old Emperor Ruizong. This provoked a group of Tang princes to rebel in 684 ; Wu 's armies suppressed them within two months. She proclaimed the Tianshou era of Wu Zhou on October 16, 690, and three days later demoted Emperor Ruizong to crown prince. He was also forced to give up his father 's surname Li in favor of the empress 's Wu. She then ruled as China 's only empress. A palace coup on February 20, 705, forced her to yield her position on February 22. The next day, her son Zhongzong was restored to power ; the Tang was formally restored on March 3. She died soon after. To legitimize her rule, she circulated a document known as the Great Cloud Sutra, which predicted that a reincarnation of the Maitreya Buddha would be a female monarch who would dispel illness, worry, and disaster from the world. She even introduced numerous revised written characters to the written language, which reverted to the originals after her death. Arguably the most important part of her legacy was diminishing the power of the northwest aristocracy, allowing people from other clans and regions of China to become more represented in Chinese politics and government. Emperor Xuanzong 's reign The Giant Wild Goose Pagoda, Chang'an ( modern - day Xi'an ), built in 652, repaired by Empress Wu Zetian in 704. There were many prominent women at court during and after Wu 's reign, including Shangguan Wan'er ( 664 -- 710 ), a poet, writer, and trusted official in charge of Wu 's private office. In 706 the wife of Emperor Zhongzong of Tang, Empress Wei ( d. 710 ), persuaded her husband to staff government offices with his sister and her daughters, and in 709 requested that he grant women the right to bequeath hereditary privileges to their sons ( which before was a male right only ). Empress Wei eventually poisoned Zhongzong, whereupon she placed his fifteen - year - old son upon the throne in 710. Two weeks later, Li Longji ( the later Emperor Xuanzong ) entered the palace with a few followers and slew Empress Wei and her faction. He then installed his father Emperor Ruizong ( r. 710 -- 712 ) on the throne. Just as Emperor Zhongzong was dominated by Empress Wei, so too was Ruizong dominated by Princess Taiping. This was finally ended when Princess Taiping 's coup failed in 712 ( she later hanged herself in 713 ) and Emperor Ruizong abdicated to Emperor Xuanzong. During the 44 - year reign of Emperor Xuanzong, the Tang dynasty reached its height, a golden age with low economic inflation and a toned down lifestyle for the imperial court. Seen as a progressive and benevolent ruler, Xuanzong even abolished the death penalty in the year 747 ; all executions had to be approved beforehand by the emperor himself ( these were relatively few, considering that there were only 24 executions in the year 730 ). Xuanzong bowed to the consensus of his ministers on policy decisions and made efforts to staff government ministries fairly with different political factions. His staunch Confucian chancellor Zhang Jiuling ( 673 -- 740 ) worked to reduce deflation and increase the money supply by upholding the use of private coinage, while his aristocratic and technocratic successor Li Linfu ( d. 753 ) favored government monopoly over the issuance of coinage. After 737 most of Xuanzong 's confidence rested in his long - standing chancellor Li Linfu, who championed a more aggressive foreign policy employing non-Chinese generals. This policy ultimately created the conditions for a massive rebellion against Xuanzong. An Lushan rebellion and catastrophe Main article : An Lushan Rebellion The Leshan Giant Buddha, 71 m ( 233 ft ) high ; begun in 713, completed in 803 The Tang Empire was at its height of power up until the middle of the 8th century, when the An Lushan Rebellion ( December 16, 755 -- February 17, 763 ) destroyed the prosperity of the empire. An Lushan was a half - Sogdian, half - Turk Tang commander since 744, had experience fighting the Khitans of Manchuria with a victory in 744, yet most of his campaigns against the Khitans were unsuccessful. He was given great responsibility in Hebei, which allowed him to rebel with an army of more than one hundred thousand troops. After capturing Luoyang, he named himself emperor of a new, but short - lived, Yan state. Despite early victories scored by Tang General Guo Ziyi ( 697 -- 781 ), the newly recruited troops of the army at the capital were no match for An Lushan 's die - hard frontier veterans, so the court fled Chang'an. While the heir apparent raised troops in Shanxi and Xuanzong fled to Sichuan province, they called upon the help of the Uyghur Khaganate in 756. The Uyghur khan Moyanchur was greatly excited at this prospect, and married his own daughter to the Chinese diplomatic envoy once he arrived, receiving in turn a Chinese princess as his bride. The Uyghurs helped recapture the Tang capital from the rebels, but they refused to leave until the Tang paid them an enormous sum of tribute in silk. Even Abbasid Arabs assisted the Tang in putting down An Lushan 's rebellion. The Tibetans took hold of the opportunity and raided many areas under Chinese control, and even after the Tibetan Empire had fallen apart in 842 ( and the Uyghurs soon after ) the Tang were in no position to reconquer Central Asia after 763. So significant was this loss that half a century later jinshi examination candidates were required to write an essay on the causes of the Tang 's decline. Although An Lushan was killed by one of his eunuchs in 757, this time of troubles and widespread insurrection continued until rebel Shi Siming was killed by his own son in 763. Nanchan Temple ( Wutai ), built during the late 8th century One of the legacies that the Tang government left since 710 was the gradual rise of regional military governors, the jiedushi, who slowly came to challenge the power of the central government. After the An Lushan Rebellion, the autonomous power and authority accumulated by the jiedushi in Hebei went beyond the central government 's control. After a series of rebellions between 781 and 784 in today 's Hebei, Shandong, Hubei and Henan provinces, the government had to officially acknowledge the jiedushi 's hereditary ruling without accreditation. The Tang government relied on these governors and their armies for protection and to suppress locals that would take up arms against the government. In return, the central government would acknowledge the rights of these governors to maintain their army, collect taxes and even to pass on their title to heirs. As time passed, these military governors slowly phased out the prominence of civil officials drafted by exams, and became more autonomous from central authority. The rule of these powerful military governors lasted until 960, when a new civil order under the Song dynasty was established. Also, the abandonment of the equal - field system meant that people could buy and sell land freely. Many poor fell into debt because of this, forced to sell their land to the wealthy, which led to the exponential growth of large estates. With the breakdown of the land allocation system after 755, the central Chinese state barely interfered in agricultural management and acted merely as tax collector for roughly a millennium, save a few instances such as the Song 's failed land nationalization during the 13th - century war with the Mongols. With the central government collapsing in authority over the various regions of the empire, it was recorded in 845 that bandits and river pirates in parties of 100 or more began plundering settlements along the Yangtze River with little resistance. In 858, enormous floods along the Grand Canal inundated vast tracts of land and terrain of the North China Plain, which drowned tens of thousands of people in the process. The Chinese belief in the Mandate of Heaven granted to the ailing Tang was also challenged when natural calamities occurred, forcing many to believe the Heavens were displeased and that the Tang had lost their right to rule. Then in 873 a disastrous harvest shook the foundations of the empire ; in some areas only half of all agricultural produce was gathered, and tens of thousands faced famine and starvation. In the earlier period of the Tang, the central government was able to meet crises in the harvest, as it was recorded from 714 -- 719 that the Tang government responded effectively to natural disasters by extending the price - regulation granary system throughout the country. The central government was able then to build a large surplus stock of foods to ward off the rising danger of famine and increased agricultural productivity through land reclamation. In the 9th century, however, the Tang government was nearly helpless in dealing with any calamity. Eighty Seven Celestials, draft painting of a fresco by Wu Daozi ( c. 685 -- 758 ) Rebuilding and recovery Xumi Pagoda, built in 636 Although these natural calamities and rebellions stained the reputation and hampered the effectiveness of the central government, the early 9th century is nonetheless viewed as a period of recovery for the Tang dynasty. The government 's withdrawal from its role in managing the economy had the unintended effect of stimulating trade, as more markets with less bureaucratic restrictions were opened up. By 780, the old grain tax and labor service of the 7th century was replaced by a semiannual tax paid in cash, signifying the shift to a money economy boosted by the merchant class. Cities in the Jiangnan region to the south, such as Yangzhou, Suzhou, and Hangzhou prospered the most economically during the late Tang period. The government monopoly on the production of salt, weakened after the An Shi Rebellion, was placed under the Salt Commission, which became one of the most powerful state agencies, run by capable ministers chosen as specialists. The commission began the practice of selling merchants the rights to buy monopoly salt, which they would then transport and sell in local markets. In 799 salt accounted for over half of the government 's revenues. S.A.M. Adshead writes that this salt tax represents `` the first time that an indirect tax, rather than tribute, levies on land or people, or profit from state enterprises such as mines, had been the primary resource of a major state. '' Even after the power of the central government was in decline after the mid 8th century, it was still able to function and give out imperial orders on a massive scale. The Tangshu ( Old Book of Tang ) compiled in the year 945 recorded that in 828 the Tang government issued a decree that standardized irrigational square - pallet chain pumps in the country : In the second year of the Taihe reign period ( 828 ), in the second month... a standard model of the chain pump was issued from the palace, and the people of Jingzhao Fu ( d footnote : the capital ) were ordered by the emperor to make a considerable number of machines, for distribution to the people along the Zheng Bai Canal, for irrigation purposes. Painting of the scholar Fu Sheng, by the Tang poet, musician, and painter Wang Wei ( 701 -- 761 ) The last great ambitious ruler of the Tang dynasty was Emperor Xianzong ( r. 805 -- 820 ), whose reign was aided by the fiscal reforms of the 780s, including a government monopoly on the salt industry. He also had an effective well trained imperial army stationed at the capital led by his court eunuchs ; this was the Army of Divine Strategy, numbering 240,000 in strength as recorded in 798. Between the years 806 and 819, Emperor Xianzong conducted seven major military campaigns to quell the rebellious provinces that had claimed autonomy from central authority, managing to subdue all but two of them. Under his reign there was a brief end to the hereditary jiedushi, as Xianzong appointed his own military officers and staffed the regional bureaucracies once again with civil officials. However, Xianzong 's successors proved less capable and more interested in the leisure of hunting, feasting, and playing outdoor sports, allowing eunuchs to amass more power as drafted scholar - officials caused strife in the bureaucracy with factional parties. The eunuchs ' power became unchallenged after Emperor Wenzong 's ( r. 826 -- 840 ) failed plot to have them overthrown ; instead the allies of Emperor Wenzong were publicly executed in the West Market of Chang'an, by the eunuchs ' command. However, the Tang did manage to restore at least indirect control over former Tang territories as far west as the Hexi Corridor and Dunhuang in Gansu. In 848 the ethnic Han Chinese general Zhang Yichao ( 799 - 872 ) managed to wrestle control of the region from the Tibetan Empire during its civil war. Shortly afterwards Emperor Xuānzong of Tang ( r. 846 - 859 ) acknowledged Zhang as the protector ( 防禦 使, Fangyushi ) of Sha Prefecture and jiedushi military governor of the new Guiyi Circuit. End of the dynasty In addition to natural calamities and jiedushi amassing autonomous control, the Huang Chao Rebellion ( 874 -- 884 ) resulted in the sacking of both Chang'an and Luoyang, and took an entire decade to suppress. Although the rebellion was defeated by the Tang, it never recovered from that crucial blow, weakening it for the future military powers to take over. There were also large groups of bandits, in the size of small armies, that ravaged the countryside in the last years of the Tang, who smuggled illicit salt, ambushed merchants and convoys, and even besieged several walled cities. Zhu Wen, originally a salt smuggler who had served under the rebel Huang, surrendered to Tang forces. By helping to defeat Huang, he was granted a series of rapid military promotions. In 907 the Tang dynasty was ended when Zhu Wen, now a military governor, deposed the last emperor of Tang, Emperor Ai of Tang, and took the throne for himself ( known posthumously as Emperor Taizu of Later Liang ). He established the Later Liang, which inaugurated the Five Dynasties and Ten Kingdoms period. A year later Zhu Wen had the deposed Emperor Ai poisoned to death. Administration and politics See also : Administrative divisions of the Tang dynasty Initial reforms A Tang sancai - glazed carved relief showing horseback riders playing polo Taizong set out to solve internal problems within the government which had constantly plagued past dynasties. Building upon the Sui legal code, he issued a new legal code that subsequent Chinese dynasties would model theirs upon, as well as neighboring polities in Vietnam, Korea, and Japan. The earliest law code to survive was the one established in the year 653, which was divided into 500 articles specifying different crimes and penalties ranging from ten blows with a light stick, one hundred blows with a heavy rod, exile, penal servitude, or execution. The legal code distinguished different levels of severity in meted punishments when different members of the social and political hierarchy committed the same crime. For example, the severity of punishment was different when a servant or nephew killed a master or an uncle than when a master or uncle killed a servant or nephew. The Tang Code was largely retained by later codes such as the early Ming dynasty ( 1368 -- 1644 ) code of 1397, yet there were several revisions in later times, such as improved property rights for women during the Song dynasty ( 960 -- 1279 ). The Tang had three departments ( Chinese : 省 ; pinyin : shěng ), which were obliged to draft, review, and implement policies respectively. There were also six ministries ( Chinese : 部 ; pinyin : bù ) under the administrations that implemented policy, each of which was assigned different tasks. These Three Departments and Six Ministries included the personnel administration, finance, rites, military, justice, and public works -- an administrative model which would last until the fall of the Qing dynasty ( 1644 -- 1912 ). Tang era gilt - gold bowl with lotus and animal motifs Although the founders of the Tang related to the glory of the earlier Han dynasty ( 3rd century BC -- 3rd century AD ), the basis for much of their administrative organization was very similar to the previous Northern and Southern dynasties. The Northern Zhou ( 6th century ) fubing system of divisional militia was continued by the Tang, along with farmer - soldiers serving in rotation from the capital or frontier in order to receive appropriated farmland. The equal - field system of the Northern Wei ( 4th -- 6th centuries ) was also kept, although there were a few modifications. Although the central and local governments kept an enormous number of records about land property in order to assess taxes, it became common practice in the Tang for literate and affluent people to create their own private documents and signed contracts. These had their own signature and that of a witness and scribe in order to prove in court ( if necessary ) that their claim to property was legitimate. The prototype of this actually existed since the ancient Han dynasty, while contractual language became even more common and embedded into Chinese literary culture in later dynasties. The center of the political power of the Tang was the capital city of Chang'an ( modern Xi'an ), where the emperor maintained his large palace quarters and entertained political emissaries with music, sports, acrobatic stunts, poetry, paintings, and dramatic theater performances. The capital was also filled with incredible amounts of riches and resources to spare. When the Chinese prefectural government officials traveled to the capital in the year 643 to give the annual report of the affairs in their districts, Emperor Taizong discovered that many had no proper quarters to rest in and were renting rooms with merchants. Therefore, Emperor Taizong ordered the government agencies in charge of municipal construction to build every visiting official his own private mansion in the capital. Imperial examinations Main article : Imperial examination Further information : Imperial examination in Chinese mythology Tang statue of a civil official dressed in Hanfu, made of sancai glazed earthenware ; he wears a tall hat, wide - sleeved outer garment tied at the waist with a wide belt, and rectangular `` kerchief '' in front. A white inner gown hangs over his square shoes. He holds a tablet to his chest, preparing to provide a report to his superiors. Students of Confucian studies were potential candidates for the imperial examinations, the graduates of which could be appointed as state bureaucrats in the local, provincial, and central government. There were two types of exams that were given, mingjing ( 明 經 ; `` illuminating the classics '' ) and jinshi ( 進士 ; `` presented scholar '' ). The mingjing was based upon the Confucian classics and tested the student 's knowledge of a broad variety of texts. The jinshi tested a student 's literary abilities in writing essay - style responses to questions on matters of governance and politics, as well as their skills in composing poetry. Candidates were also judged on their skills of deportment, appearance, speech, and level of skill in calligraphy, all of which were subjective criteria that allowed the already wealthy members of society to be chosen over ones of more modest means who were unable to be educated in rhetoric or fanciful writing skills. There was a disproportionate number of civil officials coming from aristocratic as opposed to non-aristocratic families. The exams were open to all male subjects whose fathers were not of the artisan or merchant classes, although having wealth or noble status was not a prerequisite in receiving a recommendation. In order to promote widespread Confucian education, the Tang government established state - run schools and issued standard versions of the Five Classics with selected commentaries. This competitive procedure was designed to draw the best talent into government. But perhaps an even greater consideration for the Tang rulers, aware that imperial dependence on powerful aristocratic families and warlords would have destabilizing consequences, was to create a body of career officials having no autonomous territorial or functional power base. The Tang law code ensured equal division of inherited property amongst legitimate heirs, allowing a bit of social mobility and preventing the families of powerful court officials from becoming landed nobility through primogeniture. As it turned out, these scholar - officials acquired status in their local communities and in family ties, while they also shared values that connected them to the imperial court. From Tang times until the end of the Qing dynasty in 1912, scholar - officials functioned often as intermediaries between the grassroots level and the government. Yet the potential of a widespread examination system was not fully realized until the Song dynasty, when the merit - driven scholar official largely shed his aristocratic habits and defined his social status through the examination system. As historian Patricia Ebrey states of the Song period scholar - officials : The examination system, used only on a small scale in Sui and Tang times, played a central role in the fashioning of this new elite. The early Song emperors, concerned above all to avoid domination of the government by military men, greatly expanded the civil service examination system and the government school system. Religion and politics Emperor Xuanzong of Tang wearing the robes and the hat of a scholar From the outset, religion played a role in Tang politics. In his bid for power, Li Yuan had attracted a following by claiming descent from the Daoist sage Laozi ( fl. 6th century BC ). People bidding for office would have monks from Buddhist temples pray for them in public in return for cash donations or gifts if the person was selected. Before the persecution of Buddhism in the 9th century, Buddhism and Daoism were accepted side by side, and Emperor Xuanzong ( r. 712 -- 56 ) invited monks and clerics of both religions to his court. At the same time Xuanzong exalted the ancient Laozi by granting him grand titles, wrote commentary on the Daoist Laozi, set up a school to prepare candidates for examinations on Daoist scriptures, and called upon the Indian monk Vajrabodhi ( 671 -- 741 ) to perform Tantric rites to avert a drought in the year 726. In 742 Emperor Xuanzong personally held the incense burner during a ceremony led by Amoghavajra ( 705 -- 74, patriarch of the Shingon school ) reciting `` mystical incantations to secure the victory of Tang forces. '' While religion played a role in politics, politics also played a role in religion. In the year 714, Emperor Xuanzong forbade shops and vendors in the city of Chang'an to sell copied Buddhist sutras, instead giving the Buddhist clergy of the monasteries the sole right to distribute sutras to the laity. In the previous year of 713, Emperor Xuanzong had liquidated the highly lucrative Inexhaustible Treasury, which was run by a prominent Buddhist monastery in Chang'an. This monastery collected vast amounts of money, silk, and treasures through multitudes of anonymous people 's repentances, leaving the donations on the monastery 's premise. Although the monastery was generous in donations, Emperor Xuanzong issued a decree abolishing their treasury on grounds that their banking practices were fraudulent, collected their riches, and distributed the wealth to various other Buddhist monasteries and Daoist abbeys, and to repair statues, halls, and bridges in the city. Taxes and the census A Man Herding Horses, by Han Gan ( 706 -- 783 ), a court artist under Xuanzong The Tang dynasty government attempted to create an accurate census of the size of their empire 's population, mostly for effective taxation and matters of military conscription for each region. The early Tang government established both the grain tax and cloth tax at a relatively low rate for each household under the empire. This was meant to encourage households to enroll for taxation and not avoid the authorities, thus providing the government with the most accurate estimate possible. In the census of 609, the population was tallied by efforts of the government at a size of 9 million households, or about 50 million people. The Tang census of 742 again approximated the size of China 's population at about 50 million people. Patricia Ebrey writes that even if a rather significant number of people had avoided the registration process of the tax census, the population size during the Tang had not grown significantly since the earlier Han dynasty ( the census of the year 2 recording a population of roughly 58 million people in China ). S.A.M. Adshead disagrees, estimating that there were about 75 million people by 750. In the Tang census of the year 754, there were 1,859 cities, 321 prefectures, and 1,538 counties throughout the empire. Although there were many large and prominent cities during the Tang, the rural and agrarian areas comprised the majority of China 's population at some 80 to 90 %. There was also a dramatic migratory shift of the population from northern to southern China, as the North held 75 % of the overall population at the dynasty 's inception, but by its end was reduced to 50 %. Chinese population size would not dramatically increase until the Song dynasty period, when the population doubled to 100 million people because of extensive rice cultivation in central and southern China, coupled with rural farmers holding more abundant yields of food that they could easily provide to the growing market. Military and foreign policy Main articles : Military history of China before 1911, Naval history of China, and Jimi system Further information : Imperial Guards ( Tang dynasty ) An 8th - century silk wall scroll from Dunhuang, showing the paradise of Amitabha Protectorates and tributaries The 7th and first half of the 8th century are generally considered to be the era in which the Tang reached the zenith of its power. In this period, Tang control extended further west than any previous dynasty, stretching from north Vietnam in the south, to a point north of Kashmir bordering Persia in the west, to northern Korea in the north - east. Some of the kingdoms paying tribute to the Tang dynasty included Kashmir, Nepal, Khotan, Kucha, Kashgar, Korea, Champa, and kingdoms located in Amu Darya and Syr Darya valley. Turkic nomads addressed the Emperor of Tang China as Tian Kehan. After the widespread Göktürk revolt of Shabolüe Khan ( d. 658 ) was put down at Issyk Kul in 657 by Su Dingfang ( 591 -- 667 ), Emperor Gaozong established several protectorates governed by a Protectorate General or Grand Protectorate General, which extended the Chinese sphere of influence as far as Herat in Western Afghanistan. Protectorate Generals were given a great deal of autonomy to handle local crises without waiting for central admission. After Xuanzong 's reign, military governors ( jiedushi ) were given enormous power, including the ability to maintain their own armies, collect taxes, and pass their titles on hereditarily. This is commonly recognized as the beginning of the fall of Tang 's central government. A Tang pottery warrior from Duan 's Tomb, Shaanxi. Military Museum : Ancient Weapons special exhibit Soldiers and conscription By the year 737, Emperor Xuanzong discarded the policy of conscripting soldiers that were replaced every three years, replacing them with long - service soldiers who were more battle - hardened and efficient. It was more economically feasible as well, since training new recruits and sending them out to the frontier every three years drained the treasury. By the late 7th century, the fubing troops began abandoning military service and the homes provided to them in the equal - field system. The supposed standard of 100 mu of land allotted to each family was in fact decreasing in size in places where population expanded and the wealthy bought up most of the land. Hard - pressed peasants and vagrants were then induced into military service with benefits of exemption from both taxation and corvée labor service, as well as provisions for farmland and dwellings for dependents who accompanied soldiers on the frontier. By the year 742 the total number of enlisted troops in the Tang armies had risen to about 500,000 men. Turkic and western regions Main articles : Protectorate General to Pacify the West, Protectorate General to Pacify the North, and Inner Asia during the Tang dynasty Further information : Shule Kingdom, Kingdom of Khotan, Kingdom of Qocho, Shanshan, and Turks in the Tang military A Tang dynasty painted warrior and armored horse figurine similar to the one unearthed from the tomb of Crown Prince Li Chongrun. The Sui and Tang carried out very successful military campaigns against the steppe nomads. Chinese foreign policy to the north and west now had to deal with Turkic nomads, who were becoming the most dominant ethnic group in Central Asia. To handle and avoid any threats posed by the Turks, the Sui government repaired fortifications and received their trade and tribute missions. They sent four royal princesses to form marriage alliances with Turkic clan leaders, in 597, 599, 614, and 617. The Sui stirred trouble and conflict amongst ethnic groups against the Turks. As early as the Sui dynasty, the Turks had become a major militarized force employed by the Chinese. When the Khitans began raiding northeast China in 605, a Chinese general led 20,000 Turks against them, distributing Khitan livestock and women to the Turks as a reward. On two occasions between 635 and 636, Tang royal princesses were married to Turk mercenaries or generals in Chinese service. Throughout the Tang dynasty until the end of 755, there were approximately ten Turkic generals serving under the Tang. While most of the Tang army was made of fubing Chinese conscripts, the majority of the troops led by Turkic generals were of non-Chinese origin, campaigning largely in the western frontier where the presence of fubing troops was low. Some `` Turkic '' troops were nomadisized Han Chinese, a desinicized people. A tomb guard ( wushi yong ), terracotta sculpture, Tang dynasty, early 8th century Civil war in China was almost totally diminished by 626, along with the defeat in 628 of the Ordos Chinese warlord Liang Shidu ; after these internal conflicts, the Tang began an offensive against the Turks. In the year 630, Tang armies captured areas of the Ordos Desert, modern - day Inner Mongolia province, and southern Mongolia from the Turks. After this military victory, Emperor Taizong won the title of Great Khan amongst the various Turks in the region who pledged their allegiance to him and the Chinese empire ( with several thousand Turks traveling into China to live at Chang'an ). On June 11, 631, Emperor Taizong also sent envoys to the Xueyantuo bearing gold and silk in order to persuade the release of enslaved Chinese prisoners who were captured during the transition from Sui to Tang from the northern frontier ; this embassy succeeded in freeing 80,000 Chinese men and women who were then returned to China. While the Turks were settled in the Ordos region ( former territory of the Xiongnu ), the Tang government took on the military policy of dominating the central steppe. Like the earlier Han dynasty, the Tang dynasty ( along with Turkic allies ) conquered and subdued Central Asia during the 640s and 650s. During Emperor Taizong 's reign alone, large campaigns were launched against not only the Göktürks, but also separate campaigns against the Tuyuhun, the oasis city - states, and the Xueyantuo. Under Emperor Gaozong, a campaign led by the general Su Dingfang was launched against the Western Turks ruled by Ashina Helu. The Tang Empire competed with the Tibetan Empire for control of areas in Inner and Central Asia, which was at times settled with marriage alliances such as the marrying of Princess Wencheng ( d. 680 ) to Songtsän Gampo ( d. 649 ). A Tibetan tradition mentions that Chinese troops captured Lhasa after Songtsän Gampo 's death, but no such invasion is mentioned in either Chinese annals or the Tibetan manuscripts of Dunhuang. There was a long string of conflicts with Tibet over territories in the Tarim Basin between 670 -- 692, and in 763 the Tibetans even captured the capital of China, Chang'an, for fifteen days during the An Shi Rebellion. In fact, it was during this rebellion that the Tang withdrew its western garrisons stationed in what is now Gansu and Qinghai, which the Tibetans then occupied along with the territory of what is now Xinjiang. Hostilities between the Tang and Tibet continued until they signed a formal peace treaty in 821. The terms of this treaty, including the fixed borders between the two countries, are recorded in a bilingual inscription on a stone pillar outside the Jokhang temple in Lhasa. A bas - relief of a soldier and the emperor 's horse, Autumn Dew, with elaborate saddle and stirrups, designed by Yan Liben, from the tomb of Emperor Taizong c. 650 During the Islamic conquest of Persia ( 633 -- 656 ), the son of the last ruler of the Sassanid Empire, Prince Pirooz, fled to Tang China. According to the Old Book of Tang, Pirooz was made the head of a Governorate of Persia in what is now Zaranj, Afghanistan. During this conquest of Persia, the Rashidun Islamic Caliph Uthman Ibn Affan ( r. 644 -- 656 ) sent an embassy to the Tang court at Chang'an. By the 740s, the Arabs of Khurasan had established a presence in the Ferghana basin and in Sogdiana. At the Battle of Talas in 751, Qarluq mercenaries under the Chinese defected, helping the Arab armies of the Islamic Caliphate to defeat the Tang force under commander Gao Xianzhi. Although the battle itself was not of the greatest significance militarily, this was a pivotal moment in history ; it marks the spread of Chinese papermaking into regions west of China as captured Chinese soldiers revealed secrets of Chinese papermaking to the Arabs. These techniques ultimately reached Europe by the 12th century through Arab - controlled Spain. Although they had fought at Talas, on June 11, 758, an Abbasid embassy arrived at Chang'an simultaneously with the Uyghur Turks bearing gifts for the Tang Emperor. In 788 -- 9 the Chinese concluded a military alliance with the Uighur Turks who twice defeated the Tibetans, in 789 near the town of Gaochang in Dzungaria, and in 791 near Ningxia on the Yellow River. Illustration of the Byzantine embassy to Tang Taizong in 643 CE Joseph Needham writes that a tributary embassy came to the court of Emperor Taizong in 643 from the Patriarch of Antioch. However, Friedrich Hirth and other sinologists identified Fu lin ( 拂 菻 ) in the Old and New Book of Tang as the Byzantine Empire, which those histories directly associated with Daqin ( i.e. the Roman Empire ). The embassy sent in 643 by Boduoli ( 波多 力 ) was identified as Byzantine ruler Constans II Pogonatos and further embassies were recorded as being sent into the 8th century. Furthermore, the Old and New Book of Tang also provide a description of the Byzantine capital Constantinople and how it was besieged by the Da shi ( 大 食, i.e. Umayyad Caliphate ) forces of Muawiyah I, who forced them to pay tribute to the Arabs. The 7th - century Byzantine historian Theophylact Simocatta wrote about the reunification of northern and southern China by the Sui dynasty ( dating this to the time of Emperor Maurice ) ; the capital city Khubdan ( from Old Turkic Khumdan, i.e. Chang'an ) ; the basic geography of China including its previous political division around the Yangzi River ; the name of China 's ruler Taisson meaning `` Son of God '', but possibly derived from the name of the contemporaneous ruler Emperor Taizong. East Asia See also : Protectorate General to Pacify the East A clay haniwa model of a ship, from Japan 's Kofun period ( 250 -- 538 ) In East Asia, Tang Chinese military campaigns were less successful elsewhere than in previous imperial Chinese dynasties. Like the emperors of the Sui dynasty before him, Taizong established a military campaign in 644 against the Korean kingdom of Goguryeo in the Goguryeo -- Tang War ; however, this led to its withdrawal in the first campaign because they failed to overcome the successful defense led by General Yeon Gaesomun. Allying with the Korean Silla Kingdom, the Chinese fought against Baekje and their Yamato Japanese allies in the Battle of Baekgang in August 663, a decisive Tang -- Silla victory. The Tang dynasty navy had several different ship types at its disposal to engage in naval warfare, these ships described by Li Quan in his Taipai Yinjing ( Canon of the White and Gloomy Planet of War ) of 759. The Battle of Baekgang was actually a restoration movement by remnant forces of Baekje, since their kingdom was toppled in 660 by a joint Tang -- Silla invasion, led by Chinese general Su Dingfang and Korean general Kim Yushin ( 595 -- 673 ). In another joint invasion with Silla, the Tang army severely weakened the Goguryeo Kingdom in the north by taking out its outer forts in the year 645. With joint attacks by Silla and Tang armies under commander Li Shiji ( 594 -- 669 ), the Kingdom of Goguryeo was destroyed by 668. A 10th - century mural painting in the Mogao Caves at Dunhuang showing monastic architecture from Mount Wutai, Tang dynasty ; Japanese architecture of this period was influenced by Tang Chinese architecture Although they were formerly enemies, the Tang accepted officials and generals of Goguryeo into their administration and military, such as the brothers Yeon Namsaeng ( 634 -- 679 ) and Yeon Namsan ( 639 -- 701 ). From 668 to 676, the Tang Empire would control northern Korea. However, in 671 Silla began fighting the Tang forces there. At the same time the Tang faced threats on its western border when a large Chinese army was defeated by the Tibetans on the Dafei River in 670. By 676, the Tang army was driven out of Korea by Unified Silla. Following a revolt of the Eastern Turks in 679, the Tang abandoned its Korean campaigns. Although the Tang had fought the Japanese, they still held cordial relations with Japan. There were numerous Imperial embassies to China from Japan, diplomatic missions that were not halted until 894 by Emperor Uda ( r. 887 -- 897 ), upon persuasion by Sugawara no Michizane ( 845 -- 903 ). The Japanese Emperor Tenmu ( r. 672 -- 686 ) even established his conscripted army on that of the Chinese model, his state ceremonies on the Chinese model, and constructed his palace at Fujiwara on the Chinese model of architecture. Many Chinese Buddhist monks came to Japan to help further the spread of Buddhism as well. Two 7th - century monks in particular, Zhi Yu and Zhi You, visited the court of Emperor Tenji ( r. 661 -- 672 ), whereupon they presented a gift of a south - pointing chariot that they had crafted. This 3rd century mechanically driven directional - compass vehicle ( employing a differential gear ) was again reproduced in several models for Tenji in 666, as recorded in the Nihon Shoki of 720. Japanese monks also visited China ; such was the case with Ennin ( 794 -- 864 ), who wrote of his travel experiences including travels along China 's Grand Canal. The Japanese monk Enchin ( 814 -- 891 ) stayed in China from 839 to 847 and again from 853 to 858, landing near Fuzhou, Fujian and setting sail for Japan from Taizhou, Zhejiang during his second trip to China. Economy A Tang period gilt - silver jar, shaped in the style of northern nomad 's leather bag decorated with a horse dancing with a cup of wine in its mouth, as the horses of Emperor Xuanzong were trained to do. Through use of the land trade along the Silk Road and maritime trade by sail at sea, the Tang were able to gain many new technologies, cultural practices, rare luxury, and contemporary items. From the Middle East, India, Persia, and Central Asia the Tang were able to acquire new ideas in fashion, new types of ceramics, and improved silver - smithing. The Chinese also gradually adopted the foreign concept of stools and chairs as seating, whereas the Chinese beforehand always sat on mats placed on the floor. To the Middle East, the Islamic world coveted and purchased in bulk Chinese goods such as silks, lacquerwares, and porcelain wares. Songs, dances, and musical instruments from foreign regions became popular in China during the Tang dynasty. These musical instruments included oboes, flutes, and small lacquered drums from Kucha in the Tarim Basin, and percussion instruments from India such as cymbals. At the court there were nine musical ensembles ( expanded from seven in the Sui dynasty ) representing music from throughout Asia. There was great contact and interest in India as a hub for Buddhist knowledge, with famous travelers such as Xuanzang ( d. 664 ) visiting the South Asian subcontinent. After a 17 - year - long trip, Xuanzang managed to bring back valuable Sanskrit texts to be translated into Chinese. There was also a Turkic -- Chinese dictionary available for serious scholars and students, while Turkic folksongs gave inspiration to some Chinese poetry. In the interior of China, trade was facilitated by the Grand Canal and the Tang government 's rationalization of the greater canal system that reduced costs of transporting grain and other commodities. The state also managed roughly 32,100 km ( 19,900 mi ) of postal service routes by horse or boat. Silk Road Although the Silk Road from China to the West was initially formulated during the reign of Emperor Wu ( 141 -- 87 BC ) during the Han, it was reopened by the Tang in 639 when Hou Junji ( d. 643 ) conquered the West, and remained open for almost four decades. It was closed after the Tibetans captured it in 678, but in 699, during Empress Wu 's period, the Silk Road reopened when the Tang reconquered the Four Garrisons of Anxi originally installed in 640, once again connecting China directly to the West for land - based trade. A Tang dynasty tri-color glazed figurine of a horse The Tang captured the vital route through the Gilgit Valley from Tibet in 722, lost it to the Tibetans in 737, and regained it under the command of the Goguryeo - Korean General Gao Xianzhi. When the An Lushan Rebellion ended in 763, the Tang Empire had once again lost control over its western lands, as the Tibetan Empire largely cut off China 's direct access to the Silk Road. An internal rebellion in 848 ousted the Tibetan rulers, and Tang China regained its northwestern prefectures from Tibet in 851. These lands contained crucial grazing areas and pastures for raising horses that the Tang dynasty desperately needed. Despite the many western travelers coming into China to live and trade, many travelers, mainly religious monks, recorded the strict border laws that the Chinese enforced. As the monk Xuanzang and many other monk travelers attested to, there were many Chinese government checkpoints along the Silk Road that examined travel permits into the Tang Empire. Furthermore, banditry was a problem along the checkpoints and oasis towns, as Xuanzang also recorded that his group of travelers were assaulted by bandits on multiple occasions. The Silk Road also affected Tang dynasty art. Horses became a significant symbol of prosperity and power as well as an instrument of military and diplomatic policy. Horses were also revered as a relative of the dragon. Seaports and maritime trade Chinese envoys had been sailing through the Indian Ocean to India since perhaps the 2nd century BC, yet it was during the Tang dynasty that a strong Chinese maritime presence could be found in the Persian Gulf and Red Sea, into Persia, Mesopotamia ( sailing up the Euphrates River in modern - day Iraq ), Arabia, Egypt, Aksum ( Ethiopia ), and Somalia in the Horn of Africa. Tomb Figure of a Sogdian merchant, 7th - century A gilt Buddhist reliquary with decorations of armored guards, from Silla, 7th - century During the Tang dynasty, thousands of foreign expatriate merchants came and lived in numerous Chinese cities to do business with China, including Persians, Arabs, Hindu Indians, Malays, Bengalis, Sinhalese, Khmers, Chams, Jews and Nestorian Christians of the Near East, among many others. In 748, the Buddhist monk Jian Zhen described Guangzhou as a bustling mercantile center where many large and impressive foreign ships came to dock. He wrote that `` many big ships came from Borneo, Persia, Qunglun ( Indonesia / Java )... with... spices, pearls, and jade piled up mountain high '', as written in the Yue Jue Shu ( Lost Records of the State of Yue ). During the An Lushan Rebellion Arab and Persian pirates burned and looted Guangzhou in 758, and foreigners were massacred at Yangzhou in 760. The Tang government reacted by shutting the port of Canton down for roughly five decades, and foreign vessels docked at Hanoi instead. However, when the port reopened it continued to thrive. In 851 the Arab merchant Sulaiman al - Tajir observed the manufacturing of Chinese porcelain in Guangzhou and admired its transparent quality. He also provided a description of Guangzhou 's mosque, its granaries, its local government administration, some of its written records, the treatment of travelers, along with the use of ceramics, rice - wine, and tea. However, in another bloody episode at Guangzhou in 879, the Chinese rebel Huang Chao sacked the city, and purportedly slaughtered thousands of native Chinese, along with foreign Jews, Christians, Zoroastrians, and Muslims in the process. Huang 's rebellion was eventually suppressed in 884. Vessels from Silla, Balhae and Hizen Province of Japan were all involved in the Yellow Sea trade, which Silla dominated. After Silla and Japan reopened renewed hostilities in the late 7th century, most Japanese maritime merchants chose to set sail from Nagasaki towards the mouth of the Huai River, the Yangzi River, and even as far south as the Hangzhou Bay in order to avoid Korean ships in the Yellow Sea. In order to sail back to Japan in 838, the Japanese embassy to China procured nine ships and sixty Korean sailors from the Korean wards of Chuzhou and Lianshui cities along the Huai River. It is also known that Chinese trade ships traveling to Japan set sail from the various ports along the coasts of Zhejiang and Fujian provinces. The Chinese engaged in large - scale production for overseas export by at least the time of the Tang. This was proven by the discovery of the Belitung shipwreck, a silt - preserved shipwrecked Arabian dhow in the Gaspar Strait near Belitung, which had 63,000 pieces of Tang ceramics, silver, and gold ( including a Changsha bowl inscribed with a date : `` 16th day of the seventh month of the second year of the Baoli reign '', or 826, roughly confirmed by radiocarbon dating of star anise at the wreck ). Beginning in 785, the Chinese began to call regularly at Sufala on the East African coast in order to cut out Arab middlemen, with various contemporary Chinese sources giving detailed descriptions of trade in Africa. The official and geographer Jia Dan ( 730 -- 805 ) wrote of two common sea trade routes in his day : one from the coast of the Bohai Sea towards Korea and another from Guangzhou through Malacca towards the Nicobar Islands, Sri Lanka and India, the eastern and northern shores of the Arabian Sea to the Euphrates River. In 863 the Chinese author Duan Chengshi ( d. 863 ) provided a detailed description of the slave trade, ivory trade, and ambergris trade in a country called Bobali, which historians suggest was Berbera in Somalia. In Fustat ( old Cairo ), Egypt, the fame of Chinese ceramics there led to an enormous demand for Chinese goods ; hence Chinese often traveled there ( this continued into later periods such as Fatimid Egypt ). From this time period, the Arab merchant Shulama once wrote of his admiration for Chinese seafaring junks, but noted that their draft was too deep for them to enter the Euphrates River, which forced them to ferry passengers and cargo in small boats. Shulama also noted that Chinese ships were often very large, with capacities up to 600 -- 700 passengers. Culture and society See also : Tang dynasty art A Tang sancai - glazed lobed dish with incised decorations, 8th century Tang dynasty Kai Yuan Tong Bao ( 開元 通 寳 ) coin, first minted in 621 in Chang'an, a model for the Japanese 8th - century Wadōkaichin Both the Sui and Tang Dynasties had turned away from the more feudal culture of the preceding Northern Dynasties, in favor of staunch civil Confucianism. The governmental system was supported by a large class of Confucian intellectuals selected through either civil service examinations or recommendations. In the Tang period, Daoism and Buddhism reigned as core ideologies as well, and played a large role in people 's daily lives. The Tang Chinese enjoyed feasting, drinking, holidays, sports, and all sorts of entertainment, while Chinese literature blossomed and was more widely accessible with new printing methods. Leisure Much more than earlier periods, the Tang era was renowned for the time reserved for leisure activity, especially for those in the upper classes. Many outdoor sports and activities were enjoyed during the Tang, including archery, hunting, horse polo, cuju football, cockfighting, and even tug of war. Government officials were granted vacations during their tenure in office. Officials were granted 30 days off every three years to visit their parents if they lived 1,000 mi ( 1,600 km ) away, or 15 days off if the parents lived more than 167 mi ( 269 km ) away ( travel time not included ). Officials were granted nine days of vacation time for weddings of a son or daughter, and either five, three, or one days / day off for the nuptials of close relatives ( travel time not included ). Officials also received a total of three days off for their son 's capping initiation rite into manhood, and one day off for the ceremony of initiation rite of a close relative 's son. Traditional Chinese holidays such as Chinese New Year, Lantern Festival, Cold Food Festival, and others were universal holidays. In the capital city of Chang'an there was always lively celebration, especially for the Lantern Festival since the city 's nighttime curfew was lifted by the government for three days straight. Between the years 628 and 758, the imperial throne bestowed a total of sixty - nine grand carnivals nationwide, granted by the emperor in the case of special circumstances such as important military victories, abundant harvests after a long drought or famine, the granting of amnesties, the installment of a new crown prince, etc. For special celebration in the Tang era, lavish and gargantuan - sized feasts were sometimes prepared, as the imperial court had staffed agencies to prepare the meals. This included a prepared feast for 1,100 elders of Chang'an in 664, a feast for 3,500 officers of the Divine Strategy Army in 768, and a feast for 1,200 women of the palace and members of the imperial family in the year 826. Drinking wine and alcoholic beverages was heavily ingrained into Chinese culture, as people drank for nearly every social event. A court official in the 8th century allegedly had a serpentine - shaped structure called the ' Ale Grotto ' built with 50,000 bricks on the groundfloor that each featured a bowl from which his friends could drink. Chang'an, the Tang capital Main article : Chang'an A mural depicting a corner tower, most likely one of Chang'an, from the tomb of Prince Yide ( d. 701 ) at the Qianling Mausoleum, dated 706 Map of Chang'an in Tang Dynasty Although Chang'an was the capital of the earlier Han and Jin dynasties, after subsequent destruction in warfare, it was the Sui dynasty model that comprised the Tang era capital. The roughly square dimensions of the city had six miles ( 10 km ) of outer walls running east to west, and more than five miles ( 8 km ) of outer walls running north to south. The royal palace, the Taiji Palace, stood north of the city 's central axis. From the large Mingde Gates located mid-center of the main southern wall, a wide city avenue stretched from there all the way north to the central administrative city, behind which was the Chentian Gate of the royal palace, or Imperial City. Intersecting this were fourteen main streets running east to west, while eleven main streets ran north to south. These main intersecting roads formed 108 rectangular wards with walls and four gates each, and each ward filled with multiple city blocks. The city was made famous for this checkerboard pattern of main roads with walled and gated districts, its layout even mentioned in one of Du Fu 's poems. During the Heian period, the city of Heian kyō ( present - day Kyoto ) of Japan like many cities was arranged in the checkerboard street grid pattern of the Tang capital and in accordance with traditional geomancy following the model of Chang'an. Of these 108 wards in Chang'an, two of them ( each the size of two regular city wards ) were designated as government - supervised markets, and other space reserved for temples, gardens, ponds, etc. Throughout the entire city, there were 111 Buddhist monasteries, 41 Daoist abbeys, 38 family shrines, 2 official temples, 7 churches of foreign religions, 10 city wards with provincial transmission offices, 12 major inns, and 6 graveyards. Some city wards were literally filled with open public playing fields or the backyards of lavish mansions for playing horse polo and cuju football. In 662, Emperor Gaozong moved the imperial court to the Daming Palace, which became the political center of the empire and served as the royal residence of the Tang emperors for more than 220 years. The bronze Jingyun Bell cast 711, height 247 cm high, weight 6,500 kg, now in the Xi'an Bell Tower The Tang capital was the largest city in the world at its time, the population of the city wards and its suburban countryside reaching 2 million inhabitants. The Tang capital was very cosmopolitan, with ethnicities of Persia, Central Asia, Japan, Korea, Vietnam, Tibet, India, and many other places living within. Naturally, with this plethora of different ethnicities living in Chang'an, there were also many different practiced religions, such as Buddhism, Nestorian Christianity, Manichaeism, Zoroastrianism, Judaism, and Islam being practiced within. With widely open access to China that the Silk Road to the west facilitated, many foreign settlers were able to move east to China, while the city of Chang'an itself had about 25,000 foreigners living within. Exotic green - eyed, blonde - haired Tocharian ladies serving wine in agate and amber cups, singing, and dancing at taverns attracted customers. If a foreigner in China pursued a Chinese woman for marriage, he was required to stay in China and was unable to take his bride back to his homeland, as stated in a law passed in 628 to protect women from temporary marriages with foreign envoys. Several laws enforcing segregation of foreigners from Chinese were passed during the Tang dynasty. In 779 the Tang dynasty issued an edict which forced Uighurs in the capital, Chang'an, to wear their ethnic dress, stopped them from marrying Chinese females, and banned them from passing off as Chinese. Chang'an was the center of the central government, the home of the imperial family, and was filled with splendor and wealth. However, incidentally it was not the economic hub during the Tang dynasty. The city of Yangzhou along the Grand Canal and close to the Yangtze River was the greatest economic center during the Tang era. Spring Outing of the Tang Court, by Zhang Xuan ( 713 -- 755 ) Yangzhou was the headquarters for the Tang 's government monopoly on salt, and the greatest industrial center of China ; it acted as a midpoint in shipping of foreign goods that would be organized and distributed to the major cities of the north. Much like the seaport of Guangzhou in the south, Yangzhou boasted thousands of foreign traders from all across Asia. There was also the secondary capital city of Luoyang, which was the favored capital of the two by Empress Wu. In the year 691 she had more than 100,000 families ( more than 500,000 people ) from around the region of Chang'an move to populate Luoyang instead. With a population of about a million, Luoyang became the second largest city in the empire, and with its close proximity to the Luo River it benefited from southern agricultural fertility and trade traffic of the Grand Canal. However, the Tang court eventually demoted its capital status and did not visit Luoyang after the year 743, when Chang'an's problem of acquiring adequate supplies and stores for the year was solved. As early as 736, granaries were built at critical points along the route from Yangzhou to Chang'an, which eliminated shipment delays, spoilage, and pilfering. An artificial lake used as a transshipment pool was dredged east of Chang'an in 743, where curious northerners could finally see the array of boats found in southern China, delivering tax and tribute items to the imperial court. Literature Main articles : Chinese literature and Tang poetry Calligraphy of Emperor Taizong on a Tang stele The Tang period was a golden age of Chinese literature and art. There are over 48,900 poems penned by some 2,200 Tang authors that have survived until modern times. Skill in the composition of poetry became a required study for those wishing to pass imperial examinations, while poetry was also heavily competitive ; poetry contests amongst guests at banquets and courtiers were common. Poetry styles that were popular in the Tang included gushi and jintishi, with the renowned poet Li Bai ( 701 -- 762 ) famous for the former style, and poets like Wang Wei ( 701 -- 761 ) and Cui Hao ( 704 -- 754 ) famous for their use of the latter. Jintishi poetry, or regulated verse, is in the form of eight - line stanzas or seven characters per line with a fixed pattern of tones that required the second and third couplets to be antithetical ( although the antithesis is often lost in translation to other languages ). Tang poems remained popular and great emulation of Tang era poetry began in the Song dynasty ; in that period, Yan Yu ( 嚴 羽 ; active 1194 -- 1245 ) was the first to confer the poetry of the High Tang ( c. 713 -- 766 ) era with `` canonical status within the classical poetic tradition. '' Yan Yu reserved the position of highest esteem among all Tang poets for Du Fu ( 712 -- 770 ), who was not viewed as such in his own era, and was branded by his peers as an anti-traditional rebel. The Classical Prose Movement was spurred in large part by the writings of Tang authors Liu Zongyuan ( 773 -- 819 ) and Han Yu ( 768 -- 824 ). This new prose style broke away from the poetry tradition of the piantiwen ( 騙 體 文, `` parallel prose '' ) style begun in the Han dynasty. Although writers of the Classical Prose Movement imitated piantiwen, they criticized it for its often vague content and lack of colloquial language, focusing more on clarity and precision to make their writing more direct. This guwen ( archaic prose ) style can be traced back to Han Yu, and would become largely associated with orthodox Neo-Confucianism. Short story fiction and tales were also popular during the Tang, one of the more famous ones being Yingying 's Biography by Yuan Zhen ( 779 -- 831 ), which was widely circulated in his own time and by the Yuan dynasty ( 1279 -- 1368 ) became the basis for plays in Chinese opera. Timothy C. Wong places this story within the wider context of Tang love tales, which often share the plot designs of quick passion, inescapable societal pressure leading to the abandonment of romance, followed by a period of melancholy. Wong states that this scheme lacks the undying vows and total self - commitment to love found in Western romances such as Romeo and Juliet, but that underlying traditional Chinese values of inseparableness of self from one 's environment ( including human society ) served to create the necessary fictional device of romantic tension. Small Wild Goose Pagoda, built by 709, was adjacent to the Dajianfu Temple in Chang'an, where Buddhist monks from India and elsewhere gathered to translate Sanskrit texts into Chinese There were large encyclopedias published in the Tang. The Yiwen Leiju encyclopedia was compiled in 624 by the chief editor Ouyang Xun ( 557 -- 641 ) as well as Linghu Defen ( 582 -- 666 ) and Chen Shuda ( d. 635 ). The encyclopedia Treatise on Astrology of the Kaiyuan Era was fully compiled in 729 by Gautama Siddha ( fl. 8th century ), an ethnic Indian astronomer, astrologer, and scholar born in the capital Chang'an. Chinese geographers such as Jia Dan wrote accurate descriptions of places far abroad. In his work written between 785 and 805, he described the sea route going into the mouth of the Persian Gulf, and that the medieval Iranians ( whom he called the people of Luo - He - Yi ) had erected ' ornamental pillars ' in the sea that acted as lighthouse beacons for ships that might go astray. Confirming Jia 's reports about lighthouses in the Persian Gulf, Arabic writers a century after Jia wrote of the same structures, writers such as al - Mas'udi and al - Muqaddasi. The Tang dynasty Chinese diplomat Wang Xuance traveled to Magadha ( modern northeastern India ) during the 7th century. Afterwards he wrote the book Zhang Tianzhu Guotu ( Illustrated Accounts of Central India ), which included a wealth of geographical information. Many histories of previous dynasties were compiled between 636 and 659 by court officials during and shortly after the reign of Emperor Taizong of Tang. These included the Book of Liang, Book of Chen, Book of Northern Qi, Book of Zhou, Book of Sui, Book of Jin, History of Northern Dynasties and the History of Southern Dynasties. Although not included in the official Twenty - Four Histories, the Tongdian and Tang Huiyao were nonetheless valuable written historical works of the Tang period. The Shitong written by Liu Zhiji in 710 was a meta - history, as it covered the history of Chinese historiography in past centuries until his time. The Great Tang Records on the Western Regions, compiled by Bianji, recounted the journey of Xuanzang, the Tang era 's most renowned Buddhist monk. Other important literary offerings included Duan Chengshi 's ( d. 863 ) Miscellaneous Morsels from Youyang, an entertaining collection of foreign legends and hearsay, reports on natural phenomena, short anecdotes, mythical and mundane tales, as well as notes on various subjects. The exact literary category or classification that Duan 's large informal narrative would fit into is still debated amongst scholars and historians. Religion and philosophy Main articles : Religion in China and Chinese philosophy See also : Islam during the Tang dynasty and Great Anti-Buddhist Persecution A Tang dynasty sculpture of a Bodhisattva Since ancient times, the Chinese believed in a folk religion and Taoism that incorporated many deities. The Chinese believed Tao and the afterlife was a reality parallel to the living world, complete with its own bureaucracy and afterlife currency needed by dead ancestors. Funerary practices included providing the deceased with everything they might need in the afterlife, including animals, servants, entertainers, hunters, homes, and officials. This ideal is reflected in Tang dynasty art. This is also reflected in many short stories written in the Tang about people accidentally winding up in the realm of the dead, only to come back and report their experiences. Taoism was the official religion of the Tang. Buddhism, originating in India around the time of Confucius, continued its influence during the Tang period and was accepted by some members of imperial family, becoming thoroughly sinicized and a permanent part of Chinese traditional culture. In an age before Neo-Confucianism and figures such as Zhu Xi ( 1130 -- 1200 ), Buddhism had begun to flourish in China during the Northern and Southern dynasties, and became the dominant ideology during the prosperous Tang. Buddhist monasteries played an integral role in Chinese society, offering lodging for travelers in remote areas, schools for children throughout the country, and a place for urban literati to stage social events and gatherings such as going - away parties. Buddhist monasteries were also engaged in the economy, since their land property and serfs gave them enough revenues to set up mills, oil presses, and other enterprises. Although the monasteries retained ' serfs ', these monastery dependents could actually own property and employ others to help them in their work, including their own slaves. The prominent status of Buddhism in Chinese culture began to decline as the dynasty and central government declined as well during the late 8th century to 9th century. Buddhist convents and temples that were exempt from state taxes beforehand were targeted by the state for taxation. In 845 Emperor Wuzong of Tang finally shut down 4,600 Buddhist monasteries along with 40,000 temples and shrines, forcing 260,000 Buddhist monks and nuns to return to secular life ; this episode would later be dubbed one of the Four Buddhist Persecutions in China. Although the ban would be lifted just a few years after, Buddhism never regained its once dominant status in Chinese culture. This situation also came about through new revival of interest in native Chinese philosophies, such as Confucianism and Daoism. Han Yu ( 786 -- 824 ) -- who Arthur F. Wright stated was a `` brilliant polemicist and ardent xenophobe '' -- was one of the first men of the Tang to denounce Buddhism. Although his contemporaries found him crude and obnoxious, he would foreshadow the later persecution of Buddhism in the Tang, as well as the revival of Confucian theory with the rise of Neo-Confucianism of the Song dynasty. Nonetheless, Chán Buddhism gained popularity amongst the educated elite. There were also many famous Chan monks from the Tang era, such as Mazu Daoyi, Baizhang, and Huangbo Xiyun. The sect of Pure Land Buddhism initiated by the Chinese monk Huiyuan ( 334 -- 416 ) was also just as popular as Chan Buddhism during the Tang. A timber hall built in 857, located at the Buddhist Foguang Temple of Mount Wutai, Shanxi Rivaling Buddhism was Daoism, a native Chinese philosophical and religious belief system that found its roots in the book of the Daodejing ( attributed to a 6th - century BC figure named Laozi ) and the Zhuangzi. The ruling Li family of the Tang dynasty actually claimed descent from the ancient Laozi. On numerous occasions where Tang princes would become crown prince or Tang princesses taking vows as Daoist priestesses, their lavish former mansions would be converted into Daoist abbeys and places of worship. Many Daoists were associated with alchemy in their pursuits to find an elixir of immortality and a means to create gold from concocted mixtures of many other elements. Although they never achieved their goals in either of these futile pursuits, they did contribute to the discovery of new metal alloys, porcelain products, and new dyes. The historian Joseph Needham labeled the work of the Daoist alchemists as `` proto - science rather than pseudo-science. '' However, the close connection between Daoism and alchemy, which some sinologists have asserted, is refuted by Nathan Sivin, who states that alchemy was just as prominent ( if not more so ) in the secular sphere and practiced more often by laymen. The Tang dynasty also officially recognized various foreign religions. The Assyrian Church of the East, otherwise known as the Nestorian Christian Church, was given recognition by the Tang court. In 781, the Nestorian Stele was created in order to honor the achievements of their community in China. A Christian monastery was established in Shaanxi province where the Daqin Pagoda still stands, and inside the pagoda there is Christian - themed artwork. Although the religion largely died out after the Tang, it was revived in China following the Mongol invasions of the 13th century. Although the Sogdians had been responsible for transmitting Buddhism to China from India during the 2nd to 4th centuries, soon afterwards they largely converted to Zoroastrianism due to their links to Sassanid Persia. Sogdian merchants and their families living in cities such as Chang'an, Luoyang, and Xiangyang usually built a Zoroastrian temple once their local communities grew larger than 100 households. Sogdians were also responsible for spreading Manichaeism in Tang China and the Uyghur Khaganate. The Uyghurs built the first Manichaean monastery in China in 768, yet in 843 the Tang government ordered that the property of all Manichaean monasteries be confiscated in response to the outbreak of war with the Uyghurs. With the blanket ban on foreign religions two years later, Manichaeism was driven underground and never flourished in China again. Position of women Main article : Women in ancient and imperial China § Tang dynasty Beauties Wearing Flowers, by Zhou Fang, 8th - century Concepts of women 's social rights and social status during the Tang era were notably liberal - minded for the period. However, this was largely reserved for urban women of elite status, as men and women in the rural countryside labored hard in their different set of tasks ; with wives and daughters responsible for more domestic tasks of weaving textiles and rearing of silk worms, while men tended to farming in the fields. There were many women in the Tang era who gained access to religious authority by taking vows as Daoist priestesses. The head mistresses of the bordellos in the North Hamlet of the capital Chang'an acquired large amounts of wealth and power. Their high - class courtesans, who likely influenced the Japanese geishas, were well respected. These courtesans were known as great singers and poets, supervised banquets and feasts, knew the rules to all the drinking games, and were trained to have the utmost respectable table manners. Woman playing polo, 8th - century Although they were renowned for their polite behavior, the courtesans were known to dominate the conversation amongst elite men, and were not afraid to openly castigate or criticize prominent male guests who talked too much or too loudly, boasted too much of their accomplishments, or had in some way ruined dinner for everyone by rude behavior ( on one occasion a courtesan even beat up a drunken man who had insulted her ). When singing to entertain guests, courtesans not only composed the lyrics to their own songs, but they popularized a new form of lyrical verse by singing lines written by various renowned and famous men in Chinese history. It was fashionable for women to be full - figured ( or plump ). Men enjoyed the presence of assertive, active women. The foreign horse - riding sport of polo from Persia became a wildly popular trend amongst the Chinese elite, and women often played the sport ( as glazed earthenware figurines from the time period portray ). The preferred hairstyle for women was to bunch their hair up like `` an elaborate edifice above the forehead '', while affluent ladies wore extravagant head ornaments, combs, pearl necklaces, face powders, and perfumes. A law was passed in 671 which attempted to force women to wear hats with veils again in order to promote decency, but these laws were ignored as some women started wearing caps and even no hats at all, as well as men 's riding clothes and boots, and tight - sleeved bodices. There were some prominent court women after the era of Empress Wu, such as Yang Guifei ( 719 -- 756 ), who had Emperor Xuanzong appoint many of her relatives and cronies to important ministerial and martial positions. Cuisine A terracotta sculpture of a woman, 7th - to 8th - century ; during the Tang era, female hosts prepared feasts, tea parties, and played drinking games with their guests. During the earlier Northern and Southern dynasties ( 420 -- 589 ), and perhaps even earlier, the drinking of tea ( Camellia sinensis ) became popular in southern China. Tea was viewed then as a beverage of tasteful pleasure and with pharmacological purpose as well. During the Tang dynasty, tea became synonymous with everything sophisticated in society. The poet Lu Tong ( 790 -- 835 ) devoted most of his poetry to his love of tea. The 8th - century author Lu Yu ( known as the Sage of Tea ) even wrote a treatise on the art of drinking tea, called The Classic of Tea. Although wrapping paper had been used in China since the 2nd century BC, during the Tang dynasty the Chinese were using wrapping paper as folded and sewn square bags to hold and preserve the flavor of tea leaves. Indeed, paper found many other uses besides writing and wrapping during the Tang era. Earlier, the first recorded use of toilet paper was made in 589 by the scholar - official Yan Zhitui ( 531 -- 591 ), and in 851 an Arab Muslim traveler commented on how he believed the Tang era Chinese were not careful about cleanliness because they did not wash with water ( as was his people 's habit ) when going to the bathroom ; instead, he said, the Chinese simply used paper to wipe themselves. In ancient times, the Chinese had outlined the five most basic foodstuffs known as the five grains : sesamum, legumes, wheat, panicled millet, and glutinous millet. The Ming dynasty encyclopedist Song Yingxing ( 1587 -- 1666 ) noted that rice was not counted amongst the five grains from the time of the legendary and deified Chinese sage Shennong ( the existence of whom Yingxing wrote was `` an uncertain matter '' ) into the 2nd millenniums BC, because the properly wet and humid climate in southern China for growing rice was not yet fully settled or cultivated by the Chinese. A page of Lu Yu 's The Classic of Tea During the Tang, the many common foodstuffs and cooking ingredients in addition to those already listed were barley, garlic, salt, turnips, soybeans, pears, apricots, peaches, apples, pomegranates, jujubes, rhubarb, hazelnuts, pine nuts, chestnuts, walnuts, yams, taro, etc. The various meats that were consumed included pork, chicken, lamb ( especially preferred in the north ), sea otter, bear ( which was hard to catch, but there were recipes for steamed, boiled, and marinated bear ), and even Bactrian camels. In the south along the coast meat from seafood was by default the most common, as the Chinese enjoyed eating cooked jellyfish with cinnamon, Sichuan pepper, cardamom, and ginger, as well as oysters with wine, fried squid with ginger and vinegar, horseshoe crabs and red swimming crabs, shrimp and pufferfish, which the Chinese called `` river piglet ''. Some foods were also off - limits, as the Tang court encouraged people not to eat beef ( since the bull was a valuable working animal ), and from 831 to 833 Emperor Wenzong of Tang even banned the slaughter of cattle on the grounds of his religious convictions to Buddhism. From the trade overseas and over land, the Chinese acquired peaches from Samarkand, date palms, pistachios, and figs from Greater Iran, pine nuts and ginseng roots from Korea and mangoes from Southeast Asia. In China, there was a great demand for sugar ; during the reign of Harsha over North India ( r. 606 -- 647 ), Indian envoys to the Tang brought two makers of sugar who successfully taught the Chinese how to cultivate sugarcane. Cotton also came from India as a finished product from Bengal, although it was during the Tang that the Chinese began to grow and process cotton, and by the Yuan dynasty it became the prime textile fabric in China. Methods of food preservation were important, and practiced throughout China. The common people used simple methods of preservation, such as digging deep ditches and trenches, brining, and salting their foods. The emperor had large ice pits located in the parks in and around Chang'an for preserving food, while the wealthy and elite had their own smaller ice pits. Each year the emperor had laborers carve 1000 blocks of ice from frozen creeks in mountain valleys, each block with the dimension of 3 ft ( 0.91 m ) by 3 ft by 3.5 ft ( 1.1 m ). Frozen delicacies such as chilled melon were enjoyed during the summer. Science and technology Main article : Science and technology of the Tang dynasty Further information : History of science and technology in China, List of Chinese inventions, and List of Chinese discoveries Engineering Wooden statues of tomb guardians ; mechanical - driven wooden statues served as cup - bearers, wine - pourers, dancers, and others in this age. A square bronze mirror with a phoenix motif of gold and silver inlaid with lacquer, 8th - century Technology during the Tang period was built also upon the precedents of the past. Advancements in clockworks and timekeeping included the mechanical gear systems of Zhang Heng ( 78 -- 139 ) and Ma Jun ( fl. 3rd century ) gave the Tang engineer, astronomer, and monk Yi Xing ( 683 -- 727 ) inspiration when he invented the world 's first clockwork escapement mechanism in 725. This was used alongside a clepsydra clock and waterwheel to power a rotating armillary sphere in representation of astronomical observation. Yi Xing 's device also had a mechanically timed bell that was struck automatically every hour, and a drum that was struck automatically every quarter - hour ; essentially, a striking clock. Yi Xing 's astronomical clock and water - powered armillary sphere became well known throughout the country, since students attempting to pass the imperial examinations by 730 had to write an essay on the device as an exam requirement. However, the most common type of public and palace timekeeping device was the inflow clepsydra. Its design was improved c. 610 by the Sui - dynasty engineers Geng Xun and Yuwen Kai. They provided a steelyard balance that allowed seasonal adjustment in the pressure head of the compensating tank and could then control the rate of flow for different lengths of day and night. There were many other mechanical inventions during the Tang era. This included a 3 ft ( 0.91 m ) tall mechanical wine server of the early 8th century that was in the shape of an artificial mountain, carved out of iron and rested on a lacquered - wooden tortoise frame. This intricate device used a hydraulic pump that siphoned wine out of metal dragon - headed faucets, as well as tilting bowls that were timed to dip wine down, by force of gravity when filled, into an artificial lake that had intricate iron leaves popping up as trays for placing party treats. Furthermore, as the historian Charles Benn describes it : Midway up the southern side of the mountain was a dragon... the beast opened its mouth and spit brew into a goblet seated on a large ( iron ) lotus leaf beneath. When the cup was 80 % full, the dragon ceased spewing ale, and a guest immediately seized the goblet. If he was slow in draining the cup and returning it to the leaf, the door of a pavilion at the top of the mountain opened and a mechanical wine server, dressed in a cap and gown, emerged with a wooden bat in his hand. As soon as the guest returned the goblet, the dragon refilled it, the wine server withdrew, and the doors of the pavilion closed... A pump siphoned the ale that flowed into the ale pool through a hidden hole and returned the brew to the reservoir ( holding more than 16 quarts / 15 liters of wine ) inside the mountain. Yet the use of a teasing mechanical puppet in this wine - serving device was n't exactly a novel invention of the Tang, since the use of mechanical puppets in China date back to the Qin dynasty ( 221 -- 207 BC ). In the 3rd century Ma Jun had an entire mechanical puppet theater operated by the rotation of a waterwheel. There was also an automatic wine - server known in the ancient Greco - Roman world, a design of the Greek inventor Heron of Alexandria that employed an urn with an inner valve and a lever device similar to the one described above. There are many stories of automatons used in the Tang, including general Yang Wulian 's wooden statue of a monk who stretched his hands out to collect contributions ; when the amount of coins reached a certain weight, the mechanical figure moved his arms to deposit them in a satchel. This weight - and - lever mechanism was exactly like Heron 's penny slot machine. Other devices included one by Wang Ju, whose `` wooden otter '' could allegedly catch fish ; Needham suspects a spring trap of some kind was employed here. In the realm of structural engineering and technical Chinese architecture, there were also government standard building codes, outlined in the early Tang book of the Yingshan Ling ( National Building Law ). Fragments of this book have survived in the Tang Lü ( The Tang Code ), while the Song dynasty architectural manual of the Yingzao Fashi ( State Building Standards ) by Li Jie ( 1065 -- 1101 ) in 1103 is the oldest existing technical treatise on Chinese architecture that has survived in full. During the reign of Emperor Xuanzong of Tang ( 712 -- 756 ) there were 34,850 registered craftsmen serving the state, managed by the Agency of Palace Buildings ( Jingzuo Jian ). Woodblock printing Main articles : Woodblock printing, Playing cards, and Chinese playing cards The Diamond Sutra, printed in 868, is the world 's first widely printed book to include a specific date of printing. Woodblock printing made the written word available to vastly greater audiences. One of the world 's oldest surviving printed documents is a miniature Buddhist dharani sutra unearthed at Xi'an in 1974 and dated roughly from 650 to 670. The Diamond Sutra is the first full - length book printed at regular size, complete with illustrations embedded with the text and dated precisely to 868. Among the earliest documents to be printed were Buddhist texts as well as calendars, the latter essential for calculating and marking which days were auspicious and which days were not. With so many books coming into circulation for the general public, literacy rates could improve, along with the lower classes being able to obtain cheaper sources of study. Therefore, there were more lower - class people seen entering the Imperial Examinations and passing them by the later Song dynasty. Although the later Bi Sheng 's movable type printing in the 11th century was innovative for his period, woodblock printing that became widespread in the Tang would remain the dominant printing type in China until the more advanced printing press from Europe became widely accepted and used in East Asia. The first use of the playing card during the Tang dynasty was an auxiliary invention of the new age of printing. Medicine The Chinese of the Tang era were also very interested in the benefits of officially classifying all of the medicines used in pharmacology. In 657, Emperor Gaozong of Tang ( r. 649 -- 683 ) commissioned the literary project of publishing an official materia medica, complete with text and illustrated drawings for 833 different medicinal substances taken from different stones, minerals, metals, plants, herbs, animals, vegetables, fruits, and cereal crops. In addition to compiling pharmacopeias, the Tang fostered learning in medicine by upholding imperial medical colleges, state examinations for doctors, and publishing forensic manuals for physicians. Authors of medicine in the Tang include Zhen Chuan ( d. 643 ) and Sun Simiao ( 581 -- 682 ), the former who first identified in writing that patients with diabetes had an excess of sugar in their urine, and the latter who was the first to recognize that diabetic patients should avoid consuming alcohol and starchy foods. As written by Zhen Chuan and others in the Tang, the thyroid glands of sheep and pigs were successfully used to treat goiters ; thyroid extracts were not used to treat patients with goiter in the West until 1890. The use of the dental amalgam, manufactured from tin and silver, was first introduced in the medical text Xinxiu Bencao written by Su Gong in 659. Cartography The Dunhuang map, a star map showing the North Polar region. circa 700. The whole set of star maps contains over 1,300 stars. In the realm of cartography, there were further advances beyond the map - makers of the Han dynasty. When the Tang chancellor Pei Ju ( 547 -- 627 ) was working for the Sui dynasty as a Commercial Commissioner in 605, he created a well - known gridded map with a graduated scale in the tradition of Pei Xiu ( 224 -- 271 ). The Tang chancellor Xu Jingzong ( 592 -- 672 ) was also known for his map of China drawn in the year 658. In the year 785 the Emperor Dezong had the geographer and cartographer Jia Dan ( 730 -- 805 ) complete a map of China and her former colonies in Central Asia. Upon its completion in 801, the map was 9.1 m ( 30 ft ) in length and 10 m ( 33 ft ) in height, mapped out on a grid scale of one inch equaling one hundred li ( Chinese unit of measuring distance ). A Chinese map of 1137 is similar in complexity to the one made by Jia Dan, carved on a stone stele with a grid scale of 100 li. However, the only type of map that has survived from the Tang period are star charts. Despite this, the earliest extant terrain maps of China come from the ancient State of Qin ; maps from the 4th century BC that were excavated in 1986. Alchemy, gas cylinders, and air conditioning A rounded ceramic plate with `` three colors '' ( sancai ) glaze design, 8th - century Chinese scientists of the Tang period employed complex chemical formulas for an array of different purposes, often found through experiments of alchemy. These included a waterproof and dust - repelling cream or varnish for clothes and weapons, fireproof cement for glass and porcelain wares, a waterproof cream applied to silk clothes of underwater divers, a cream designated for polishing bronze mirrors, and many other useful formulas. The vitrified, translucent ceramic known as porcelain was invented in China during the Tang, although many types of glazed ceramics preceded it. Ever since the Han dynasty ( 202 BC -- 220 AD ), the Chinese had drilled deep boreholes to transport natural gas from bamboo pipelines to stoves where cast iron evaporation pans boiled brine to extract salt. During the Tang dynasty, a gazetteer of Sichuan province stated that at one of these 182 m ( 600 ft ) ' fire wells ', men collected natural gas into portable bamboo tubes which could be carried around for dozens of km ( mi ) and still produce a flame. These were essentially the first gas cylinders ; Robert Temple assumes some sort of tap was used for this device. This Tang yellow - glazed pottery horse includes a carefully sculpted saddle, which is decorated with leather straps and ornamental fastenings featuring eight - petalled flowers and apricot leaves. The inventor Ding Huan ( fl. 180 AD ) of the Han dynasty invented a rotary fan for air conditioning, with seven wheels 3 m ( 10 ft ) in diameter and manually powered. In 747, Emperor Xuanzong had a `` Cool Hall '' built in the imperial palace, which the Tang Yulin ( 唐語林 ) describes as having water - powered fan wheels for air conditioning as well as rising jet streams of water from fountains. During the subsequent Song dynasty, written sources mentioned the air conditioning rotary fan as even more widely used. Historiography See also : Chinese historiography The first classic work about the Tang is the Old Book of Tang by Liu Xu ( 887 -- 946 ) et al. of the Later Jin, who redacted it during the last years of his life. This was edited into another history ( labelled the New Book of Tang ) in order to distinguish it, which was a work by the Song historians Ouyang Xiu ( 1007 -- 1072 ), Song Qi ( 998 -- 1061 ), et al. of the Song dynasty ( between the years 1044 and 1060 ). Both of them were based upon earlier annals, yet those are now lost. Both of them also rank among the Twenty - Four Histories of China. One of the surviving sources of the Old Book of Tang, primarily covering up to 756, is the Tongdian, which Du You presented to the emperor in 801. The Tang period was again placed into the enormous universal history text of the Zizhi Tongjian, edited, compiled, and completed in 1084 by a team of scholars under the Song dynasty Chancellor Sima Guang ( 1019 -- 1086 ). This historical text, written with 3 million Chinese characters in 294 volumes, covered the history of China from the beginning of the Warring States ( 403 BC ) until the beginning of the Song dynasty ( 960 ). See also Di Renjie Eight Immortals of the Wine Cup Yijing ( monk ) Kaiyuan Za Bao ( government newspaper for officials ) List of emperors of the Tang dynasty The family tree of the Tang dynasty emperors List of tributaries of Imperial China Nine Pinnacle Pagoda Qianling Mausoleum Tang dynasty in Inner Asia Tang poetry Wei Zheng Yan Zhenqing Taxation in premodern China Notes Jump up ^ The polite form Dà Táng ( 大 唐 `` Great Tang '' ) was often used, e.g. in the names of books of the period. Jump up ^ During the reign of the Tang the world population grew from about 190 million to approximately 240 million, a difference of 50 million. See also medieval demography. References Citations Jump up ^ Turchin, Peter ; Adams, Jonathan M. ; Hall, Thomas D ( December 2006 ). `` East - West Orientation of Historical Empires ''. Journal of world - systems research. 12 ( 2 ) : 222. ISSN 1076 - 156X. 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Twitchett, Denis ( 2000 ), `` Tibet in Tang 's Grand Strategy '', in van de Ven, Hans, Warfare in Chinese History, Leiden : Koninklijke Brill, pp. 106 -- 179, ISBN 90 - 04 - 11774 - 1 Wang, Yongxing ( 2003 ), Draft Discussion of Early Tang Dynasty 's Military Affairs History, Beijing : Kunlun Press, ISBN 7 - 80040 - 669 - 5 Whitfield, Susan ( 2004 ), The Silk Road : Trade, Travel, War and Faith, Chicago : Serindia, ISBN 978 - 1 - 932476 - 13 - 2 Wilkinson, Endymion ( 2013 ), Chinese History : A New Manual, Cambridge, MA : Harvard University Press, ISBN 978 - 0 - 674 - 06715 - 8 Wood, Nigel ( 1999 ), Chinese Glazes : Their Origins, Chemistry, and Recreation, Philadelphia : University of Pennsylvania Press, ISBN 0 - 8122 - 3476 - 6 Woods, Frances ( 1996 ), Did Marco Polo go to China ?, United States : Westview Press, ISBN 0 - 8133 - 8999 - 2 Wong, Timothy C. ( 1979 ), `` Self and Society in Tang Dynasty Love Tales '', Journal of the American Oriental Society, 99 ( 1 ) : 95 -- 100, doi : 10.2307 / 598956, JSTOR 598956 Wright, Arthur F. ( 1959 ), Buddhism in Chinese History, Stanford : Stanford University Press Xi, Zezong ( 1981 ), `` Chinese Studies in the History of Astronomy, 1949 -- 1979 '', Isis, 72 ( 3 ) : 456 -- 470, doi : 10.1086 / 352793 Xu, Daoxun ( 1993 ), The Biography of Tang Xuanzong, et al., Beijing : People 's Press, ISBN 7 - 01 - 001210 - 5 Xue, Zongzheng ( 1992 ), Turkic peoples ( 突厥 史 ), Beijing : 中国 社会 科学 出版 社, ISBN 7 - 5004 - 0432 - 8 Yu, Pauline ( 1998 ), `` Charting the Landscape of Chinese Poetry '', Chinese Literature : Essays, Articles, Reviews ( CLEAR ), 20 : 71 -- 87, JSTOR 495264 Yule, Henry ( 1915 ), Henri Cordier, ed., Cathay and the Way Thither : Being a Collection of Medieval Notices of China, Vol I : Preliminary Essay on the Intercourse Between China and the Western Nations Previous to the Discovery of the Cape Route, 1, London : London : Hakluyt Society, retrieved 21 September 2016 Further reading Abramson, Marc S. ( 2008 ), Ethnic Identity in Tang China, Philadelphia : University of Pennsylvania Press, ISBN 978 - 0 - 8122 - 4052 - 8 Barrett, Timothy Hugh ( 2008 ), The Woman Who Discovered Printing, Great Britain : Yale University Press, ISBN 978 - 0 - 300 - 12728 - 7 Cotterell, Arthur ( 2007 ), The Imperial Capitals of China : An Inside View of the Celestial Empire, London : Pimlico, ISBN 978 - 1 - 84595 - 009 - 5 de la Vaissière, E. ( 2005 ), Sogdian Traders. A History, Leiden : Brill, ISBN 90 - 04 - 14252 - 5 Schafer, Edward H. ( 1967 ), The Vermilion Bird : T'ang Images of the South, Berkeley and Los Angeles : University of California Press Wang, Zhenping ( 2013 ), Tang China in Multi-Polar Asia : A History of Diplomacy and War, ISBN 978 - 0 - 8248 - 3644 - 3 The History of Relationship Development Between Imperial China and Tibetan Regime In Tang and Song Dynasty External links Wikimedia Commons has media related to Tang Dynasty. Wikimedia Commons has media related to Art of the Tang dynasty. Wikisource has the text of the 1905 New International Encyclopedia article T'ang. The Tang Dynasty at the Metropolitan Museum of Art Home of 300 Tang Poems, University of Virginia Tang art with video commentary, from the Minneapolis Institute of Arts Paintings of Sui and Tang dynasties Zizhi Tongjian, vols. 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199. Preceded by Sui dynasty Dynasties in Chinese history 618 -- 907 Succeeded by Five Dynasties and Ten Kingdoms Tang dynasty topics History Timeline of the Tang dynasty Transition from Sui to Tang Xuanwu Gate Incident Tang -- Eastern Turks War Tang -- Xueyantuo War Goguryeo -- Tang War Baekje -- Tang War Silla -- Tang War Tang - Tibetan relations Tang -- Western Turks War oasis states Karakhoja Karasahr Kucha Conquest Battle of Talas An Lushan Rebellion Niu -- Li factional strife Sweet Dew Incident Huang Chao Rebellion Society and culture Art Poetry Three Hundred Tang Poems Poets Official headwear Old Book of Tang New Book of Tang Li Bai Du Fu Islam during the Tang dynasty Government Emperor List Family tree Three Departments and Six Ministries Imperial guards Administrative divisions Jimi system Jiedushi Four Garrisons of Anxi Imperial examinations Turkic generals Military expansion Protectorate General to Pacify the West Protectorate General to Pacify the North Protectorate General to Pacify the East Protectorate General to Pacify the South Beiting Protectorate Ungjin Commandery Gyerim Territory Area Command Tang dynasty in Inner Asia Science and technology Flying cash Woodblock printing Yi Xing Economy Salt Industry Commission Empires Ancient Akkadian Egyptian Assyrian Babylonian Carthaginian Chinese Qin Han Jin Northern Wei Hellenistic Macedonian Seleucid Hittite Indian Nanda Maurya Satavahana Shunga Gupta Harsha Iranian Median Achaemenid Parthian Sasanian Kushan Mongol Xianbei Xiongnu Roman Western Eastern Teotihuacan Post-classical Arab Rashidun Umayyad Abbasid Fatimid Córdoba Aragonese Angevin Aztec Benin Bornu Bruneian Bulgarian First Second Byzantine Nicaea Trebizond Carolingian Chinese Sui Tang Song Yuan Ethiopian Zagwe Solomonic Georgian Hunnic Inca Indian Chola Gurjara - 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Question: who was the last ruler of the tang dynasty
Answer: Emperor Ai of Tang