All About Ah-Long

All About Ah-Long is a 1989 Hong Kong drama film directed by Johnnie To and starring Chow Yun-fat and Sylvia Chang, who also serve as the film's storywriters. The film tells the story of Ah-Long, a single father trying to raise his son Porky on a low income as a truckdriver at a construction site. The son's mother, Por-por, Ah-Long's ex-girlfriend, returns from the United States with a boyfriend to shoot a video commercial and discovers that Porky is her own son.