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Pure Hearts: Into Chinese Showbiz, often shortened to Pure Hearts (纯洁心灵), is a 2017 Chinese film directed and produced by Bi Zhifei. The plot focuses on a teacher at an acting school trying to make a movie with his students and the difficulties that result from the dark side of the film industry and their personal struggles during production. Due to its troubled production, which involved accusations of overworking and mistreatment by Bi and claims that it took 12 years to make, and low ratings of the film itself after release despite praise by industry and government figures beforehand, it has been considered one of the worst Chinese films ever made, being panned by both critics and mainstream audiences for its acting, screenplay, direction, narrative structure, characters, themes, editing, and its theme song. In response, Bi sued Douban of discrimination against domestic films and even submitted the film to the Cannes Film Festival.