[edrxty]

This^

Not only is it entirely possible to prevent Chinese capture but it's arguably possible for Taiwan to achieve this on their own with minimal to no US intervention. This will likely change in the future, but for the next decade their sovereignty is relatively assured.

To say amphibious invasions are difficult is itself a massive understatement. Taiwan is armed to the teeth and and has incredibly hostile terrain all along its coasts effectively making any attempt on the area a guaranteed bloodbath.