Beast Cops

Beast Cops Chinese is a 1998 Hong Kong action film written, produced and directed by Gordon Chan, and also directed by Dante Lam. The film stars Michael Wong and Anthony Wong. The film was released in the Hong Kong onApril 1998.

Soon, however, Tungs squad is assigned a new Commanding Officer in the form of Lieutenant Michael Cheung Michael Wong no relation to Anthony, a nononsense, tough as nails cop who was transferred for having punched out his own previous Commanding Officer. In an attempt to keep tabs on Cheung and similarly introduce him to their precinct Tung takes Cheung to the disco owned by Fai. There, Cheung meets a madam named Yoyo whose name in dubbed version is sometimes given as YoYo Ma, who is also Fais moll. Angry and upset that Fai left on such short notice without her, Yoyo accepts Cheungs overture and the two soon find themselves genuinely in love.In the meantime Fais eager underling, Pushpin, moves himself into Fais role and attempts to force Yoyo to peddle customers drugs through her escorts. Yoyo refuses, an action which results in PushPin slapping her across the face. Cheung finds out and takes revenge by inspecting PushPins establishments every night. ........

Source: Wikipedia