List of emperors of the Han dynasty
The Han dynasty was founded by the peasant rebel leader (Liu Bang), known posthumously as Emperor Gao ("r". 202 –195 BC) or Gaodi. The longest reigning emperor of the dynasty was Emperor Wu ("r". 141–87 BC), or Wudi, who reigned for 54 years. The dynasty was briefly interrupted by the Xin dynasty of the former regent Wang Mang, but he was overthrown in 23 AD and the Han dynasty was reestablished by Liu Xiu, known posthumously as Emperor Guangwu (r. 25–57 AD), or Guangwu Di. The last Han emperor, Emperor Xian ("r". 189–220 AD), was a puppet monarch of Chancellor Cao Cao (155–220 AD), who dominated the court and was made King of Wei. In 220 AD, Cao's son Pi usurped the throne as Emperor Wen of Wei ("r". 220–226 AD) and ended the Han dynasty.
Emperor Xian of Han
In late 220, some months after Cao Cao's death, Cao Cao's successor, Cao Pi, forced Emperor Xian to abdicate the throne to him. He then established the state of Cao Wei with himself as the new emperor – an event marking the formal end of the Han dynasty and the beginning of the Three Kingdoms period in China. The dethroned Emperor Xian received the noble title Duke of Shanyang (山陽公) from Cao Pi and spent the rest of his life in comfort and enjoyed preferential treatment. He died on 21 April 234, about 14 years after the fall of the Han dynasty.