Succinctly put. Ukraine is a much bigger bite for Russia than Taiwan is for China. But the logistical differences are compelling and not to China’s advantage. China will monitor the response of the West, assess cost/benefits of taking action, and proceed accordingly.
There was no armed multinational coalition committed to fight for Ukraine as there is for Taiwan
There are multinational navies currently deployed to repel a China incursion into Taiwan.
The Pacific Rim nations are not the cowardly pacifist Europeans