It is a classic line in the Korean drama "New World" by the elevator god of war Ding Qing. It was accidentally set on fire by a girl from Xinjiang. New World is known as the Korean version of Infernal Affairs. Not only does it tell the story of a gangster, a policeman and an undercover, but director Hoon jung Park also made it clear that this work was created because of Infernal Affairs. However, when the director Park recreated the story of the police and undercover, he completely integrated the emotional characteristics and narrative style of the local film, and the brotherhood and Jianghu morality became more entangled, which made the world view and right and wrong view of the film more blurred, especially the ending of the film was enough to make people feel deeply.