How many movies have Nguyễn Chánh Tín and Thương Tín acted in together?

They have worked on 3 movies together! Their first movie together was Cards on the Table: Blue Sky in the Split of Leaf (1985) while their highest rated movie together was Murder in the Lens (2018). They have not worked together since Murder in the Lens (2018). They are most known for their thriller films together.