In 342 AD, Sima Pi was made an evil king. In 36 1 year, Jin Mu died, and Empress Dowager Sima Pi was made emperor, and changed to Yuanhe. In 364, Sima Pi was poisoned to live a hundred years. Empress Dowager Chongde was regent. In 365, Emperor Ai of Jin died in the West Hall of Taiji Hall at the age of 25. Posthumous title mourned the emperor and was buried in Ping Ling, Ann.
During Sima Pi's reign, warlords scuffled, Huan Wen was in power and made several northern expeditions. The country was in constant war, and the Eastern Jin Dynasty went into decline. Murong was rampant, and many wars in the Eastern Jin Dynasty ended in failure. Sima Pi is also a calligrapher, and his representative works include Zhong Shu Tie and so on.