Since Police Story in 1986, Chan's films have all had trailers showing things that went wrong, injuries, and other outtakes from the filming, so that the audience is left convinced that Chan had risked his own flesh and bone to actually perform the exciting scenes they saw on-screen.
從一九八六年完成《警察故事》後，成龍電影中都會把他拍片過程中失誤、受傷等 NG 鏡頭剪入片尾，讓觀眾相信電影中所見的，都是憑著他的血肉之軀，所拚搏出來的精彩畫面。