The Peerless God of Medicine

Su Nan, a fool who had endured endless humiliation, suddenly awakened his memories and gained heaven-defying abilities. Now he rules the city, and everyone who once humiliated him will be crushed beneath his feet!

The King of Hell says you die at the third watch? I can keep you alive until the fifth. If I say you die at the fifth watch, who in all the world would dare to save you?