How many movies have Sandra Ng Kwan-Yue and Tina Lau Tin-Lan acted in together?

They have worked on 4 movies together! Their first movie together was Twinkle, Twinkle, Lucky Stars (1985) while their highest rated movie together was Echoes of the Rainbow (2010). They have not worked together since All About Love (2010). They are most known for their comedy films together.