How many movies have Sun Ya-Tung and Ting Shan-Hsi collaborated on?

They have worked on 3 movies together! Their first movie together was The Kinmen Bombs (1986) while their highest rated movie together was The Beheaded 1000 (1993). They have not worked together since The Beheaded 1000 (1993). They are most known for their war films together.