How many movies have Nelson Cheung Hok-Yun and Tats Lau Yee-Tat acted in together?

They have worked on 6 movies together! Their first movie together was The Tragic Fantasy: Tiger of Wanchai (1994) while their highest rated movie together was Escape from Hong Kong Island (2004). They have not worked together since I Love Wing Chun (2011). They are most known for their comedy films together.