Rent Red to Kill (1994)

A social worker takes on the case of Ming-Ming (Lily Chung), a mentally disabled young woman recently orphaned after her remaining parent is killed in a car accident. With the help of her social worker, Ming-Ming is admitted into a home for people with special needs, where the kind head of the home, Mr. Chan (Ben Ngai-Cheung Ng), takes a liking to the young lady. As Ming-Ming's situation seems to brighten up, a serial rapist terrorizes the building where the shelter is located, his M.O... women in red. One night, he suddenly sets his sights on Ming-Ming, and a horrific ordeal ensues.