How many movies have Ng Yat-Siu and Tse Chi-Wai collaborated on?

They have worked on 1 movie together! Their first movie together was The Story of Wong Fei-Hung, Part 4: The Death of Liang Huan (1950) and was their highest rated movie together. They have not worked together since The Story of Wong Fei-Hung, Part 4: The Death of Liang Huan (1950).