How many movies have Hu Peng and Ng Yat-Siu collaborated on?

They have worked on 4 movies together! Their first movie together was Wong Fei-hung: The Whip That Smacks the Candle (1949) 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). They are most known for their action films together.