China Dolls.

Tong catches Chiu attempting to rape his wife May (Amy Yip). They scuffle and Tong shoots Chiu dead with Chiu's gun. They flee but Tong is killed in a shootout with police. May begs an officer to take her child, since if he is repatriated he'll have a horrible life. So, the infant son ends up in Hong Kong separated from his mother. Six years pass and May is a hotel maid then gets forced into prostitution. She longs to see her son, who is now a young boy, maybe to fully reunite with him.