Can’t stress enough how important it is for Marvel to get these decisions spot on. Movies with Chinese themes are always a prickly issue in Mainland China. Especially with all the tensions in the region. They have to cast right firstly, which involves featuring mainland actors and actresses. A mainland lead preferable, or at least one who has deep enough origins in Mainland China. Taiwan should be fine because China considers it part of the country. Then in the movie itself there has to be special care payed to the way Chinese culture is portrayed, hence the need for crew with experience on Chinese and especially HK productions (choreographers, set designers, cinematographers). The Chinese movie industry is mature and the HK bench even more deep, so Marvel can’t say they can’t find people to fill those roles.
We saw how Crazy Rich Asians fell apart in China and most of Asia. It’s what happens when a Hollywood movie focuses on asian-American instead of Asian. Hope Marvel does not make the same mistake.