ror of the Dongchang Who went into its prison never came out again.The Dongchang actually arrested Duan Changmian and threw him into the imperial prison. This is definitely not an ordinary case, but a...n's words, saying: "This palace also remembers some things from that year. King Ning was brave and martial. Just after coming of age, he was sent to the military by the late emperor for training. He d...