How many movies have Angela Tong Ying-Ying and Tats Lau Yee-Tat acted in together?

They have worked on 4 movies together! Their first movie together was Cause We Are So Young (1997) while their highest rated movie together was You Shoot, I Shoot (2001). They have not worked together since 72 Tenants of Prosperity (2010). They are most known for their comedy films together.