Jiang Yu pretended to be crazy and acted like a fool to survive in the Song family. After his grandfather died, he made a will to gift his family property, but he was mistreated. In order to take revenge, she designed to get into contact with He Lian, the crown prince of Jinzhou. He Lian saw through the disguise but was willing to serve as a sharp blade to help her destroy the Song family and finally get married.
