The emperors of the Han dynasty were the supreme heads of government during the second imperial dynasty of China; the Han dynasty (202Â BCÂ â 220Â AD) followed the Qin dynasty (221â206Â BC) and preceded the Three Kingdoms (220â265Â AD). The era is conventionally periodised into the Western Han (202Â BCÂ â 9Â AD) and Eastern Han (25â220Â AD).
The Han dynasty was founded by the peasant rebel leader Liu Bang, known posthumously as Emperor Gao (r.â202â195Â BC). The longest reigning emperor of the dynasty was Emperor Wu (r.â141â87Â BC), who reigned for 54 years. The dynasty was briefly interrupted by the Xin dynasty of the former regent Wang Mang, but he was killed during a rebellion on 6Â October 23Â AD. The Han dynasty was reestablished by Liu Xiu, known posthumously as Emperor Guangwu (r.â25â57Â AD) or Guangwu Di, who claimed the throne on 5Â August 25Â AD. The last Han emperor, Emperor Xian (r.â189â220Â AD), was a puppet monarch of Chancellor Cao Cao (155â220Â AD), who dominated the court and was made King of Wei. On 11Â December 220, Cao's son Pi usurped the throne as Emperor Wen of Wei (r.â220â226Â AD) and ended the Han dynasty.