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Wei Zheng

Wei Zheng (580 – 11 February 643), courtesy name Xuancheng, posthumous name Duke Wenzhen of Zheng, was a Chinese politician and historian. He served as a chancellor of the Tang dynasty for about 13 years during the reign of Emperor Taizong. He was also the lead editor of the official history of the Sui dynasty, the ''Book of Sui'', which was composed in 636.

Wei Zheng was born to a poor family in modern Hebei, and joined Li Mi's rebellion against the Sui dynasty in his youth. After Li Mi's submission to the Tang Empire, Wei Zheng became a Tang official and eventually served on the staff of Li Jiancheng, the Crown Prince and eldest son of Emperor Gaozu, the Tang dynasty's founding emperor. As such, he served against the interests of Li Jiancheng's younger brother, Li Shimin (the Prince of Qin), with whom Li Jiancheng was locked in an intense rivalry. In 626, Li Shimin ambushed and killed Li Jiancheng, and then effectively forced Emperor Gaozu to yield the throne to him.

Rather than punishing Wei Zheng, however, he was impressed with Wei's faithfulness to Li Jiancheng, and he made Wei an important official, eventually a chancellor. Wei Zheng's promotion to this position gave him far broader freedom to criticise others, particularly the emperor, than other officers of the court. He emphasized propriety and opposed overextending the state. His advice and criticism were not always accepted, but in accordance with Confucian etiquette, the emperor would concede to his suggestions with some regularity.

After Wei Zheng's death in 643, the emperor commented that he was a mirror to show the mistakes of the court, and built an elaborate tomb for him near his own imperial tomb and betrothed one of his daughters, Princess Hengshan, to Wei Shuyu (), Wei Zheng's son. Subsequently, as a result of false accusations made by others in the court, the stone monument that Emperor Taizong had built for Wei Zheng was destroyed, and Emperor Taizong cancelled the planned marriage between Princess Hengshan and Wei Shuyu. However, after the failure of the campaign against Goguryeo in 646, Emperor Taizong, believing that Wei Zheng would have stopped him from going on the campaign had he lived longer, restored the stone monument. Wei Zheng's effect and influence has been examined by many historians long after his death. Wei Zheng is also revered as a minor god of doorways in parts of Taiwan. Provided by Wikipedia