“U.S. vs China war would shut their economy down as well.”
Their manufacturing base is now MUCH larger than ours is, with soon-to-be-secure access to Russian Gas, oil, and minerals.
How long would it take to convert that to a war footing?
Where are they going to get the money to pay the employees who work in those plants once the revenues stop coming from us? Where are they going to get the food to feed the employees in those plants as well as the rest of their population and their military once we stop selling it to them?