Yan Heng was sent back, and he fell ill that very day. Ming Yu, who had been unwell for a long time, heard the news and couldn't help but visit him despite his own illness, "You need to change your temper. Even if you're giving advice, that's not the way to do it."
Yan Heng was disheartened and said in a deep voice, "The General has changed; power makes him lose his mind. I should have known from when Gou Chun attacked Zhao Hanzhang and wasn't severely punished; that's when the General's heart began to change."
Ming Yu fell silent for a moment and then asked, "What do you plan to do about it?"
Yan Heng lowered his eyes, deep in thought for a long time. When he looked up again, his resolve was much firmer, "I will write a memorial to advise him."
He said, "For the last time, if he can turn back, I will assist him as I did before. If... things remain as they are, then I will leave, live in seclusion in the mountains, and never concern myself with worldly affairs again."
