How many movies have Ma Yuk-Sing and Ronny Ching Siu-Lung collaborated on?

They have worked on 5 movies together! Their first movie together was As Tears Go By (1988) and was their highest rated movie together. They have not worked together since Immortal Spirit (1999). They are most known for their drama films together.

Role
Bodyguard in Final Scene (uncredited)
Crew
Sound