How many movies have Kingdom Yuen King-Tan and Raymond Kwok Siu-Keung collaborated on?

They have worked on 5 movies together! Their first movie together was Future Cops (1993) while their highest rated movie together was Those Were the Days (1997). They have not worked together since Raped by an Angel 4: The Rapist's Union (1999). They are most known for their comedy films together.