How many movies have Alfred Cheung Kin-Ting and Barry Wong Ping-Yiu collaborated on?

They have worked on 12 movies together! Their first movie together was Twinkle, Twinkle, Lucky Stars (1985) while their highest rated movie together was The Strange Bedfellow (1986). They have not worked together since Truant Heroes (1992). They are most known for their comedy films together.