But in fact, in the stage of acting, it is not as fun as imagined. Therefore, Eddie Peng Yuyan Yuyan was trained by the devil and practiced martial arts such as "mixed fighting" and "Brazilian Jiu Jitsu". It is understood that Lin Chaoxian, for the sake of effect, found a real boxer to fight Eddie Peng Yuyan Yu Yan and Nick Cheung. During the filming, he had to get at least two or three hundred punches in each scene. "My brother Hui and I were afraid that someone would call our names, because that meant playing, and we were very tired. And I think the director loves MMA very much. In fact, he really wants to fight with us personally. "