The Royal Scoundrel(1991)

Beach Boy is a maverick cop whose unorthodox and incompetent ways are frowned upon by his uptight superiors. His inept partner Mr. Chow isn't much help, and is more concerned with taking care of his many, many children. On a routine stakeout, Beach Boy and Mr. Chow rescue a lovely Mainland girl named Ah Yuk, who was previously abused by her criminal uncle.