title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: Despite this glowing message by the Emperor, Chan writes that a year later in 1446, the Ming court cut off all relations with the Karmapa hierarchs. Until then, the court was unaware that Deshin Shekpa had died in 1415. The Ming court had believed that the representatives of the Karma Kagyu who continued to visit the Ming capital were sent by the Karmapa.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: The exact nature of relations between Tibet and the Ming dynasty of China (1368–1644) is unclear. Analysis of the relationship is further complicated by modern political conflicts and the application of Westphalian sovereignty to a time when the concept did not exist. Some Mainland Chinese scholars, such as Wang Jiawei and Nyima Gyaincain, assert that the Ming dynasty had unquestioned sovereignty over Tibet, pointing to the Ming court's issuing of various titles to Tibetan leaders, Tibetans' full acceptance of these titles, and a renewal process for successors of these titles that involved traveling to the Ming capital. Scholars within China also argue that Tibet has been an integral part of China since the 13th century and that it was thus a part of the Ming Empire. But most scholars outside China, such as Turrell V. Wylie, Melvin C. Goldstein, and Helmut Hoffman, say that the relationship was one of suzerainty, that Ming titles were only nominal, that Tibet remained an independent region outside Ming control, and that it simply paid tribute until the Jiajing Emperor (1521–1566), who ceased relations with Tibet.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: Shih-Shan Henry Tsai writes that the Yongle Emperor sent his eunuch Yang Sanbao into Tibet in 1413 to gain the allegiance of various Tibetan princes, while the Yongle Emperor paid a small fortune in return gifts for tributes in order to maintain the loyalty of neighboring vassal states such as Nepal and Tibet. However, Van Praag states that Tibetan rulers upheld their own separate relations with the kingdoms of Nepal and Kashmir, and at times "engaged in armed confrontation with them."
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: During his travels beginning in 1403, Deshin Shekpa was induced by further exhortations by the Ming court to visit Nanjing by April 10, 1407. Norbu writes that the Yongle Emperor, following the tradition of Mongol emperors and their reverence for the Sakya lamas, showed an enormous amount of deference towards Deshin Shekpa. The Yongle Emperor came out of the palace in Nanjing to greet the Karmapa and did not require him to kowtow like a tributary vassal. According to Karma Thinley, the emperor gave the Karmapa the place of honor at his left, and on a higher throne than his own. Rossabi and others describe a similar arrangement made by Kublai Khan and the Sakya Phagpa lama, writing that Kublai would "sit on a lower platform than the Tibetan cleric" when receiving religious instructions from him.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: Even though the Gelug exchanged gifts with and sent missions to the Ming court up until the 1430s, the Gelug was not mentioned in the Mingshi or the Mingshi Lu. On this, historian Li Tieh-tseng says of Tsongkhapa's refusal of Ming invitations to visit the Yongle Emperor's court:
title: Nanjing
paragraph_text: A monument to the huge human cost of some of the gigantic construction projects of the early Ming dynasty is the Yangshan Quarry (located some 15–20 km (9–12 mi) east of the walled city and Ming Xiaoling mausoleum), where a gigantic stele, cut on the orders of the Yongle Emperor, lies abandoned, just as it was left 600 years ago when it was understood it was impossible to move or complete it.
title: Yaxing Coach
paragraph_text: Yaxing Coach (Yangzhou Yaxing Motor Coach Co., Ltd) is a bus manufacturer based in Yangzhou, Jiangsu, China. It is a subsidiary of Jiangsu Yaxing that was founded in 1998. Buses are produced under the "Yaxing", "Yangtse（Yangzlv）", and more recently Asiastar brands.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: In his usurpation of the throne from the Jianwen Emperor (r. 1398–1402), the Yongle Emperor was aided by the Buddhist monk Yao Guangxiao, and like his father, the Hongwu Emperor, the Yongle Emperor was "well-disposed towards Buddhism", claims Rossabi. On March 10, 1403, the Yongle Emperor invited Deshin Shekpa, 5th Karmapa Lama (1384–1415), to his court, even though the fourth Karmapa had rejected the invitation of the Hongwu Emperor. A Tibetan translation in the 16th century preserves the letter of the Yongle Emperor, which the Association for Asian Studies notes is polite and complimentary towards the Karmapa. The letter of invitation reads,
title: History of Beijing
paragraph_text: The city of Beijing has a long and rich history that dates back over 3,000 years. Prior to the unification of China by the First Emperor in 221 BC, Beijing had been for centuries the capital of the ancient states of Ji and Yan. During the first millennia of imperial rule, Beijing was a provincial city in northern China. Its stature grew in the 10th to the 13th centuries when the nomadic Khitan and forest - dwelling Jurchen peoples from beyond the Great Wall expanded southward and made the city a capital of their dynasties, the Liao and Jin. When Kublai Khan made Dadu the capital of the Mongol - led Yuan dynasty (1279 -- 1368), all of China was ruled from Beijing for the first time. From 1279 onward, with the exception of two interludes from 1368 to 1420 and 1928 to 1949, Beijing would remain as China's capital, serving as the seat of power for the Ming dynasty (1421 -- 1644), the Manchu - led Qing dynasty (1644 -- 1912), the early Republic of China (1912 -- 1928) and now the People's Republic of China (1949 -- present).
title: Nanjing
paragraph_text: The first emperor of the Ming dynasty, Zhu Yuanzhang (the Hongwu Emperor), who overthrew the Yuan dynasty, renamed the city Yingtian, rebuilt it, and made it the dynastic capital in 1368. He constructed a 48 km (30 mi) long city wall around Yingtian, as well as a new Ming Palace complex, and government halls. It took 200,000 laborers 21 years to finish the project. The present-day City Wall of Nanjing was mainly built during that time and today it remains in good condition and has been well preserved. It is among the longest surviving city walls in China. The Jianwen Emperor ruled from 1398 to 1402.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: According to Chen, the Ming officer of Hezhou (modern day Linxia) informed the Hongwu Emperor that the general situation in Dbus and Gtsang "was under control," and so he suggested to the emperor that he offer the second Phagmodru ruler, Jamyang Shakya Gyaltsen, an official title. According to the Records of the Founding Emperor, the Hongwu Emperor issued an edict granting the title "Initiation State Master" to Sagya Gyaincain, while the latter sent envoys to the Ming court to hand over his jade seal of authority along with tribute of colored silk and satin, statues of the Buddha, Buddhist scriptures, and sarira.
title: Zheng He
paragraph_text: Zheng He (Chinese: 鄭和; 1371 -- 1433 or 1435) was a Chinese mariner, explorer, diplomat, fleet admiral, and enslaved court eunuch during China's early Ming dynasty. He was originally born as Ma He in a Muslim family, later adopted the conferred surname Zheng from Emperor Yongle. Zheng commanded expeditionary voyages to Southeast Asia, South Asia, Western Asia, and East Africa from 1405 to 1433. His larger ships stretched 120 meters or more in length. These carried hundreds of sailors on four tiers of decks.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: The Information Office of the State Council of the PRC preserves an edict of the Zhengtong Emperor (r. 1435–1449) addressed to the Karmapa in 1445, written after the latter's agent had brought holy relics to the Ming court. Zhengtong had the following message delivered to the Great Treasure Prince of Dharma, the Karmapa:
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: During the reign of the Jiajing Emperor (r. 1521–1567), the native Chinese ideology of Daoism was fully sponsored at the Ming court, while Tibetan Vajrayana and even Chinese Buddhism were ignored or suppressed. Even the History of Ming states that the Tibetan lamas discontinued their trips to Ming China and its court at this point. Grand Secretary Yang Tinghe under Jiajing was determined to break the eunuch influence at court which typified the Zhengde era, an example being the costly escort of the eunuch Liu Yun as described above in his failed mission to Tibet. The court eunuchs were in favor of expanding and building new commercial ties with foreign countries such as Portugal, which Zhengde deemed permissible since he had an affinity for foreign and exotic people.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: According to Tibetologist John Powers, Tibetan sources counter this narrative of titles granted by the Chinese to Tibetans with various titles which the Tibetans gave to the Chinese emperors and their officials. Tribute missions from Tibetan monasteries to the Chinese court brought back not only titles, but large, commercially valuable gifts which could subsequently be sold. The Ming emperors sent invitations to ruling lamas, but the lamas sent subordinates rather than coming themselves, and no Tibetan ruler ever explicitly accepted the role of being a vassal of the Ming.
title: Nanjing
paragraph_text: Archaeological discovery shows that "Nanjing Man" lived in more than 500 thousand years ago. Zun, a kind of wine vessel, was found to exist in Beiyinyangying culture of Nanjing in about 5000 years ago. In the late period of Shang dynasty, Taibo of Zhou came to Jiangnan and established Wu state, and the first stop is in Nanjing area according to some historians based on discoveries in Taowu and Hushu culture. According to legend,[which?] Fuchai, King of the State of Wu, founded a fort named Yecheng (冶城) in today's Nanjing area in 495 BC. Later in 473 BC, the State of Yue conquered Wu and constructed the fort of Yuecheng (越城) on the outskirts of the present-day Zhonghua Gate. In 333 BC, after eliminating the State of Yue, the State of Chu built Jinling Yi (金陵邑) in the western part of present-day Nanjing. It was renamed Moling (秣陵) during reign of Qin Shi Huang. Since then, the city experienced destruction and renewal many times.[citation needed] The area was successively part of Kuaiji, Zhang and Danyang prefectures in Qin and Han dynasty, and part of Yangzhou region which was established as the nation's 13 supervisory and administrative regions in the 5th year of Yuanfeng in Han dynasty (106 BC). Nanjing was later the capital city of Danyang Prefecture, and had been the capital city of Yangzhou for about 400 years from late Han to early Tang.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: Chen Qingying, Professor of History and Director of the History Studies Institute under the China Tibetology Research Center in Beijing, writes that the Ming court conferred new official positions on ex-Yuan Tibetan leaders of the Phachu Kargyu and granted them lower-ranking positions. Of the county (zong or dzong) leaders of Neiwo Zong and Renbam Zong, Chen states that when "the Emperor learned the actual situation of the Phachu Kargyu, the Ming court then appointed the main Zong leaders to be senior officers of the Senior Command of Dbus and Gtsang." The official posts that the Ming court established in Tibet, such as senior and junior commanders, offices of Qianhu (in charge of 1,000 households), and offices of Wanhu (in charge of 10,000 households), were all hereditary positions according to Chen, but he asserts that "the succession of some important posts still had to be approved by the emperor," while old imperial mandates had to be returned to the Ming court for renewal.
title: Qing dynasty
paragraph_text: The formal structure of the Qing government centered on the Emperor as the absolute ruler, who presided over six Boards (Ministries[c]), each headed by two presidents[d] and assisted by four vice presidents.[e] In contrast to the Ming system, however, Qing ethnic policy dictated that appointments were split between Manchu noblemen and Han officials who had passed the highest levels of the state examinations. The Grand Secretariat,[f] which had been an important policy-making body under the Ming, lost its importance during the Qing and evolved into an imperial chancery. The institutions which had been inherited from the Ming formed the core of the Qing "Outer Court," which handled routine matters and was located in the southern part of the Forbidden City.
title: Sino-Tibetan relations during the Ming dynasty
paragraph_text: A. Tom Grunfeld says that Tsongkhapa claimed ill health in his refusal to appear at the Ming court, while Rossabi adds that Tsongkhapa cited the "length and arduousness of the journey" to China as another reason not to make an appearance. This first request by the Ming was made in 1407, but the Ming court sent another embassy in 1413, this one led by the eunuch Hou Xian (候顯; fl. 1403–1427), which was again refused by Tsongkhapa. Rossabi writes that Tsongkhapa did not want to entirely alienate the Ming court, so he sent his disciple Chosrje Shākya Yeshes to Nanjing in 1414 on his behalf, and upon his arrival in 1415 the Yongle Emperor bestowed upon him the title of "State Teacher"—the same title earlier awarded the Phagmodrupa ruler of Tibet. The Xuande Emperor (r. 1425–1435) even granted this disciple Chosrje Shākya Yeshes the title of a "King" (王). This title does not appear to have held any practical meaning, or to have given its holder any power, at Tsongkhapa's Ganden Monastery. Wylie notes that this—like the Karma Kargyu—cannot be seen as a reappointment of Mongol Yuan offices, since the Gelug school was created after the fall of the Yuan dynasty.
title: Nanjing
paragraph_text: Over two centuries after the removal of the capital to Beijing, Nanjing was destined to become the capital of a Ming emperor one more time. After the fall of Beijing to Li Zicheng's rebel forces and then to the Manchu-led Qing dynasty in the spring of 1644, the Ming prince Zhu Yousong was enthroned in Nanjing in June 1644 as the Hongguang Emperor. His short reign was described by later historians as the first reign of the so-called Southern Ming dynasty.

Question: How long was the city where the Yongle emperor greeted the person the Ming court thought the representatives were sent by the capitol of Yaxing Coach's headquarters location?

Question decomposition:
question: Who did the Ming court think the representatives were sent by?
answer: the Karmapa
question: Where did the Yongle Emperor greet the #1 ?
answer: Nanjing
question: Yaxing Coach >> headquarters location
answer: Yangzhou
question: How long had #2 been the capital city of #3 ?
answer: about 400 years

Answer: about 400 years