Cao happy transformed into Cao Cao's most disliked son, and faced the desperate situation of his whole family being massacred by Zhang Kai at the beginning. He stole family property and secretly recruited Liao Hua and other hundreds of refugees as an ambush. When the massacre occurred as planned, he rescued his grandfather Cao Song and saw through Zhang Kai's "rescue" trap. At the moment when Cao Song is about to die, Cao happy's decision will change history.
