How many movies have Alfred Cheung Kin-Ting and Chung Shu-Kai collaborated on?

They have worked on 5 movies together! Their first movie together was Men Suddenly in Black 2 (2006) while their highest rated movie together was I Love Hong Kong 2011 (2011). They have not worked together since I Love Hong Kong 2013 (2013). They are most known for their comedy films together.