How many movies have Albert Mak Kai-Kwong and Chiu Chi-Shing collaborated on?

They have worked on 9 movies together! Their first movie together was Running on Karma (2003) while their highest rated movie together was Septet: The Story of Hong Kong (2022). They have not worked together since Septet: The Story of Hong Kong (2022). They are most known for their crime films together.