Emperor Wu of Jin, (; 236 – 17 May 290), personal name Sima Yan , courtesy name Anshi (安世), was the grandson of Sima Yi and son of Sima Zhao. He became the first emperor of the Jin dynasty (265–420) after forcing Cao Huan, last ruler of the state of Cao Wei, to abdicate to him. He reigned from 265 to 290 and, after conquering the state of Eastern Wu in 280, was the emperor of a unified China. Emperor Wu was known for his extravagance and sensuality, especially after the unification of China; legends boasted of his incredible potency among ten thousand concubines.