Pom Pom And Hot Hot (1992)

Buddy cop type movie with Jacky Cheung and Alfred Cheung as the 'unconvential' cops with attitude, and Lam Ching-Ying as their long-suffering chief officer. The cops are sent undercover in a case of weapons smuggling, which all gets a bit dangerous. Features a large sub-plot involving Jacky's cousin from Mainland China and his absolutely dreadful treatment of sister Loletta Lee, and a bunch of incredibly OTT gunplay sequences. Lots of leaping, diving, swinging from ropes with guns blazing and all that is most enjoyable about HK approaches to gunfights.