Not only that. You can’t just travel from China to Taiwan. It’s a bit difficult. Most people must travel as part of a tour group. Unless it’s business or you have family to sponsor you or something like that. Basically you can’t just jump on a plane and have a holiday in Taiwan from China.
When president President Tsai Ing-wen was elected it became difficult. In both 2016 and again in 2019. China banned solo travel from certain cities in China to Taiwan.