Tiger on the Beat 2 (1990)

Lam, a nearly 40-year-old cop with a sense of unfulfillment, yearns to make his mark before hanging up his badge. His sister pressures him to help find a suitable Chinese girl for his nephew, Baffalo, an American Born Chinese. However, Baffalo has his sights set on Ellen, who inadvertently observes a murder. This fateful event pulls Lam, Baffalo, and Ellen into a dangerous world of underground arms smuggling, putting their lives at risk as the murderer hunts them down to silence them for good.