How many movies have Joseph Lai San-Lun and Juliet Chan collaborated on?

They have worked on 3 movies together! Their first movie together was Scorpion Thunderbolt (1984) while their highest rated movie together was American Commando 6: Kill Butterfly Kill (1987). They have not worked together since American Commando: Angel's Blood Mission (1988). They are most known for their action films together.