How many movies have Cai Văn Mỹ and Trần Ngọc Huỳnh collaborated on?

They have worked on 3 movies together! Their first movie together was Cards on the Table: The Foster Son of the Archbishop (1982) and was their highest rated movie together. They have not worked together since Cards on the Table: The Roving Chessman (1983). They are most known for their history films together.