How many movies have Dick Tung Wai-Keung and Ng Kwok-Wah collaborated on?

They have worked on 3 movies together! Their first movie together was The Heroic Trio (1993) while their highest rated movie together was Crime Story (1993). They have not worked together since Executioners: The Heroic Trio 2 (1993). They are most known for their action films together.