Taiwan is also less than 6% of the size of Ukraine. It will be hard to deny something happening outside your window, next door, or the block down your street. France is smaller than Ukraine for comparison.China has a massive advantage over 2/3 potential hotspots that Russia doesn't have over Ukraine: Taiwan is an island and South Korea is essentially an island. That means cutting their SLOC will be enough to enforce a total media blackout. This also warns the PLA leadership that a total media blackout is 100% necessary to eliminate enemy morale and grant maximum freedom of action.