How many movies have Do Thi My Thanh and Nguyen Thi Nguyet Hieu collaborated on?

They have worked on 3 movies together! Their first movie together was Her Blue Sky (2019) while their highest rated movie together was Gintama: The Very Final (2021). They have not worked together since Detective Conan: The Scarlet Bullet (2021). They are most known for their animation films together.