How many movies have Dickson Poon Dik-Sang and Patrick Yuen Yeuk-Gwong collaborated on?

They have worked on 3 movies together! Their first movie together was In the Line of Duty 5: Middle Man (1990) while their highest rated movie together was Tiger Cage II (1990). They have not worked together since Forbidden Arsenal (1991). They are most known for their action films together.