Context: Luoyang, formerly romanized as Loyang, is a city located in the confluence area of Luo River and Yellow River in Central China. It is a prefecture-level city in western Henan province. It borders the provincial capital of Zhengzhou to the east, Pingdingshan to the southeast, Nanyang to the south, Sanmenxia to the west, Jiyuan to the north, and Jiaozuo to the northeast. As of the final 2010 census, Luoyang had a population of 6,549,941 inhabitants with 1,857,003 people living in the built-up ("or metro") area made of the city's five urban districts, all of which except the Jili District are not urbanized yet., Cao Rui (204 or 206  22 January 239), courtesy name Yuanzhong, was the second emperor of the state of Cao Wei during the Three Kingdoms period. His parentage is in dispute: his mother, Lady Zhen, was Yuan Xi's wife, but she later remarried Cao Pi, the first ruler of Wei. Based on conflicting accounts of his age, Pei Songzhi calculated that, in order to be Cao Pi's son, Cao Rui could not have been 36 (by East Asian age reckoning) when he died as recorded, so the recorded age was in error; Lu Bi and Mou Guangsheng argued instead that Cao Rui was Yuan Xi's son., Wang Mang (c. 45  6 October 23 AD), courtesy name Jujun (), was a Han Dynasty official who seized the throne from the Liu family and founded the Xin (or Hsin, meaning "renewed") Dynasty (), ruling 923 AD. The Han dynasty was restored after his overthrow, and his rule marks the separation between the Western Han Dynasty (before Xin) and Eastern Han Dynasty (after Xin). Some historians have traditionally viewed Wang as a usurper, while others have portrayed him as a visionary and selfless social reformer. Though a learned Confucian scholar who sought to implement the harmonious society he saw in the classics, his efforts ended in chaos., Cao Wei (220265) was one of the three major states that competed for supremacy over China in the Three Kingdoms period (220280). With its capital at Luoyang, the state was established by Cao Pi in 220, based upon the foundations laid by his father, Cao Cao, towards the end of the Eastern Han dynasty. The name "Wei" first became associated with Cao Cao when he was named the Duke of Wei by the Eastern Han government in 213, and became the name of the state when Cao Pi proclaimed himself emperor in 220. Historians often add the prefix "Cao" to distinguish it from other Chinese states known as "Wei", such as Wei of the Warring States period and Northern Wei of the Southern and Northern Dynasties. The authority of the ruling Cao family gradually weakened after the death of the second Wei emperor, Cao Rui, and eventually fell into the hands of Sima Yi, a Wei regent, and his family, in 249. Cao Rui's successors remained as puppet rulers under the control of the Simas until Sima Yi's grandson, Sima Yan, forced the last Wei ruler, Cao Huan, to abdicate the throne and established the Jin dynasty., Sima Yi (179  7 September 251), courtesy name Zhongda, was a general and politician of the state of Cao Wei in the Three Kingdoms period. He is perhaps best known for defending Wei from Zhuge Liang's Northern Expeditions. His success and subsequent rise in prominence paved the way for his grandson Sima Yan's founding of the Jin dynasty, which would eventually bring an end to the Three Kingdoms era. In 265 after the Jin dynasty was established, Sima Yi was posthumously honoured as Emperor Xuan of Jin with the temple name of Gaozu., The Xin dynasty was a Chinese dynasty (termed so despite having only one emperor) which lasted from 9 to 23 AD. It interrupted the Han dynasty, dividing it into the periods of the Western Han and the Eastern Han., Gongsun Kang was a warlord during the late Han Dynasty period of Chinese history . He became a vassal of Cao Wei during the Three Kingdoms period ., The Han dynasty was the second imperial dynasty of China (206 BC220 AD), preceded by the Qin dynasty (221206 BC) and succeeded by the Three Kingdoms period (220280 AD). Spanning over four centuries, the Han period is considered a golden age in Chinese history. To this day, China's majority ethnic group refers to itself as the "Han people" and the Chinese script is referred to as "Han characters".
It was founded by the rebel leader Liu Bang, known posthumously as Emperor Gaozu of Han, and briefly interrupted by the Xin dynasty (923 AD) of the former regent Wang Mang. This interregnum separates the Han dynasty into two periods: the Western Han or Former Han (206 BC  9 AD) and the Eastern Han or Later Han (25220 AD)., The Qin dynasty was the first dynasty of Imperial China, lasting from 221 to 206 BC. Named for its heartland of Qin, in modern-day Gansu and Shaanxi, the dynasty was formed after the conquest of six other states by the Qin state, and its founding emperor named Qin Shi Huang, the First Emperor of Qin. The strength of the Qin state was greatly increased by the Legalist reforms of Shang Yang in the fourth century BC, during the Warring States period. In the mid and late third century BC, the Qin accomplished a series of swift conquests, first ending the powerless Zhou dynasty, and eventually conquering the other six of the Seven Warring States to gain control over the whole of China. It is also the shortest dynasty in Chinese history, lasting only 15 years with two emperors., Cao Cao (155  15 March 220), courtesy name Mengde, was a Chinese warlord and the penultimate Chancellor of the Eastern Han dynasty who rose to great power in the final years of the dynasty. As one of the central figures of the Three Kingdoms period, he laid the foundations for what was to become the state of Cao Wei and was posthumously honoured as "Emperor Wu of Wei". Although he is often portrayed as a cruel and merciless tyrant in subsequent literature, Cao Cao has also been praised as a brilliant ruler and military genius who treated his subordinates like his family. During the fall of the Eastern Han dynasty, Cao Cao was able to secure the most populated and prosperous cities of the central plains and northern China. Cao had much success as the Han chancellor, but his handling of the Han emperor Liu Xie was heavily criticized and resulted in a continued and then escalated civil war. Opposition directly gathered around warlords Liu Bei and Sun Quan, whom Cao was unable to quell. Cao was also skilled in poetry and martial arts and wrote many war journals., The Three Kingdoms (AD 220280) was the tripartite division of China between the states of Wei, Shu, and Wu, following the Han dynasty and preceding the Jin dynasty. The term "Three Kingdoms" itself is something of a mistranslation, since each state was eventually headed not by a king, but by an emperor who claimed legitimate succession from the Han dynasty. Nevertheless, the term "Three Kingdoms" has become standard among sinologists. To further distinguish the three states from other historical Chinese states of similar names, historians have added a relevant character: Wei is also known as Cao Wei, Shu is also known as Shu Han, and Wu is also known as Dong (or Eastern) Wu., Cao Huan (246-303), courtesy name Jingming, was the fifth and last emperor of the state of Cao Wei during the Three Kingdoms period. In 265, he abdicated the throne in favour of Sima Yan (later Emperor Wu of the Jin dynasty), and brought an end to the Wei regime. After his abdication, Cao Huan was granted the title "Prince of Chenliu" and held it until his death, after which he was posthumously honoured as "Emperor Yuan (of Cao Wei)"., Emperor Gaozu of Han (256 BC  June 1, 195 BC), born Liu Bang, was the founder and first emperor of the Han dynasty, reigning from 202  195 BC. He was one of the few dynasty founders in Chinese history with humble origin from the peasant class., China, officially the People's Republic of China (PRC), is a unitary sovereign state in East Asia. With a population of over 1.381 billion, it is the world's most populous country. The state is governed by the Communist Party of China, and its capital is Beijing. It exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two mostly self-governing special administrative regions (Hong Kong and Macau), and claims sovereignty over Taiwan. The country's major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a great power and a major regional power within Asia, and has been characterized as a potential superpower., The Warring States period was an era in ancient Chinese history following the Spring and Autumn period and concluding with the Qin wars of conquest that saw the annexation of all other contender states, which ultimately led to the Qin state's victory in 221 BC as the first unified Chinese empire known as the Qin dynasty. Although different scholars point toward different dates ranging from 481 BC to 403 BC as the true beginning of the Warring States, Sima Qian's choice of 475 BC is generally the most often cited and popularly accepted one. The Warring States era also overlaps with the second half of the Eastern Zhou dynasty, though the Chinese sovereign, known as the king of Zhou, ruled merely as a figurehead and served as a backdrop against the machinations of the warring states., The Northern Wei, also known as the Tuoba Wei (), Later Wei (), or Yuan Wei (), was a dynasty founded by the Tuoba clan of the Xianbei, which ruled northern China from 386 to 534 ("de jure" until 535), during the period of the Southern and Northern Dynasties. Described as "part of an era of political turbulence and intense social and cultural change", the Northern Wei Dynasty is particularly noted for unifying northern China in 439: this was also a period of introduced foreign ideas; such as Buddhism, which became firmly established. , Cao Pi (187  29 June 226), courtesy name Zihuan, was the first emperor of the state of Cao Wei in the Three Kingdoms period. He was born in Qiao (; present-day Bozhou, Anhui) as the second son of Cao Cao, a warlord who lived in the late Eastern Han Dynasty. However, he was the eldest son among all the children born to Cao Cao by his concubine (later wife) Lady Bian. Of all his brothers, Cao Pi was the shrewdest. Instead of focusing on academic studies or administering military affairs, he was always in the presence of court officials in order to gain their support. He was mostly in charge of defence at the start of his career. After the defeat of Cao Cao's rival Yuan Shao at the Battle of Guandu, he took the widow of Yuan Shao's son Yuan Xi, Lady Zhen, as a concubine, but in 221 Lady Zhen died and Guo Nüwang became empress., Subject: gongsun kang, Relation: date_of_death, Options: (A) 1 (B) 15 (C) 179 (D) 187 (E) 195 (F) 2010 (G) 204 (H) 206 (I) 213 (J) 22 (K) 220 (L) 221 (M) 23 (N) 246 (O) 251 (P) 256 (Q) 265 (R) 280 (S) 29 june 226 (T) 303 (U) 36 (V) 386 (W) 403 (X) 439 (Y) 45 (Z) 534 ([) 535 (\) 549 (]) 6 (^) 7 (_) 9 (`) 941
Output: 221