How many movies have Chang Tsai-hsing and Rexen Cheng Jen-Shuo acted in together?

They have worked on 3 movies together! Their first movie together was Gatao 2: Rise of the King (2018) while their highest rated movie together was GATAO: Like Father Like Son (2024). They have not worked together since GATAO: Like Father Like Son (2024). They are most known for their action films together.