How many movies have John Shum Kin-Fun and Lowell Lo Koon-Ting acted in together?

They have worked on 13 movies together! Their first movie together was Aces Go Places III: Our Man from Bond Street (1984) while their highest rated movie together was It's a Drink! It's a Bomb! (1985). They have not worked together since The Banquet (1991). They are most known for their drama films together.