How many movies have Cheng Chih-wei and Irene Luo acted in together?

They have worked on 3 movies together! Their first movie together was Warriors of the Rainbow: Seediq Bale - Part 1: The Sun Flag (2011) while their highest rated movie together was Warriors of the Rainbow: Seediq Bale - Part 2: The Rainbow Bridge (2011). They have not worked together since Warriors of the Rainbow: Seediq Bale (2012). They are most known for their history films together.