According to the query of iQiyi app, Li Zhi Tian learned that he was bullied by Li Zhitian since he was a child and was called a dumb bastard. When I grow up, Li Zhitian is getting worse and worse, and the dumb can't stand it. Finally, I hit Li Zhitian with an iron bar. As Hard as a Rock is Zhang Yimou's first hard-core movie about police and bandits. Against the background of "eliminating evil", the film tells the story of an ordinary young policeman who works in the criminal identification center of the municipal bureau. In order to protect people's safety, he began a thrilling investigation tour.