"Don't be angry, being angry will reduce your wisdom; Don't hate, hatred will make you lose your judgment. "

This is the classic line of Cao Cao in the 45th episode of Three Kingdoms. The background of the story is that Marten sent someone to assassinate Cao. Cao Cao called his sons together and asked them what they thought of the assassin. Except Cao Chong, everyone suggested searching and beheading the assassin, while Cao Chong suggested letting the assassin go and letting Marten withdraw. Cao Cao appreciated it and said this sentence to educate his son.