How many movies have Nelson Cheung Hok-Yun and Raymond Wong Pak-Ming acted in together?

They have worked on 5 movies together! Their first movie together was All's Well, Ends Well '97 (1997) while their highest rated movie together was Dry Wood, Fierce Fire (2002). They have not worked together since Escape from Hong Kong Island (2004). They are most known for their romance films together.