During his reign he is largely advised by regents , his uncle Yu Liang and high - level officials .
April 1 -- Crown Prince Jin Chengdi , age 4 , succeeds his father Jin Mingdi as emperor of the Eastern Jin dynasty .
During Jin Chengdi 's reign Jin Chengdi is largely advised by regents , his uncle Yu Liang and high - level officials .
April 1 -- Crown Prince Jin Chengdi , age 4 , succeeds his father Jin Mingdi as emperor of the Eastern Jin dynasty .