The Generation Gap.

Ling Xi (David Chiang) is a rebellious youth whose liaison with underage girlfriend Cindy (Agnes Chan) is the spark which lights the eventual flame of his rebellion. Against the wishes of her parents, Ling Xi and Cindy move in together, and the two find a measure of bliss in their shared life. However, rumors circulate that Ling Xi is using Cindy as a means of financial support. After his brother Ling Zhao (Di Lung) returns Cindy to her parents, Ling Xi is branded an outcast. His anger only leads to spiraling bitterness, and finally employ in a triad gang which gives him the ability to release his frustration - which he does until the bitter end.