Cao Huan
Cao Huan () (246–302), courtesy name Jingming, was the fifth and last emperor of the state of Cao Wei during the Three Kingdoms period. On 4 February 266, 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)".