How many movies have Garry Chan Chi-Shing and Ng Kwok-Kin acted in together?

They have worked on 6 movies together! Their first movie together was Seven Years Itch (1987) while their highest rated movie together was It's a Mad, Mad, Mad World Too (1992). They have not worked together since It's a Mad, Mad, Mad World Too (1992). They are most known for their comedy films together.

Role
Suspect at Police Station (uncredited)
Role
Policeman (uncredited)