How did seven Xiao-he play how to kill his father?

Bended by evil spirits. The script obliterates the truth of Xiao He's father's death: he was possessed by the evil spirits of Meijingfu, controlled and led astray. Script killing means that one or more players will get a role in a story after choosing a story. After reading their own scripts and clarifying their identity, they will find out the real murderer or complete their specific tasks through several rounds of discussion, evidence collection and various logical reasoning.