Yuwen Huaji

Yuwen Huaji (宇文化及) (died 619) was a general of the Chinese dynasty Sui Dynasty who, in 618, led a coup against Emperor Yang of Sui, killing him. He subsequently declared Emperor Yang's nephew Yang Hao and led Emperor Yang's elite Xiaoguo Army (驍果) north, but was then repeatedly defeated by Li Mi, Li Shentong (李神通), and finally Dou Jiande. Believing that his defeat was near and wanting to be emperor before his ultimate defeat, he poisoned Yang Hao and declared himself the emperor of a Xu state. Dou captured him in 619 and killed him.