司 ㄙ sī 马 ㄇㄚ ˇ mǎ 懿 ㄧ ˋ yì 司 ㄙ sī 馬 ㄇㄚ ˇ mǎ 懿 ㄧ ˋ yì Sima Yi (179-251), warlord under Cao Cao and subsequently founder of the Jin dynasty