I'm not sure China has as much "hunkering-down potential" as you do. My understanding is that China cannot operate (ie feed their population) without substantial imports of both fuel and food including fertilizer. China can be cut off from important supplies via sanctions and blockade far outside the short operating range of the Chinese Navy. However, that would require cooperation from our many allies and trading partners that Trump just told to go screw. There is also the very real probability that such an act could quickly turn into a shooting war.Trying to beat China in a trade war is like invading Russia in winter.
It's not a winnable battle. Russia could skirmish, retreat into the show, consume the local supplies and burn the rest -- all more or less indefinitely. China has an analogous ability in a trade war. They have so much hunkering-down potential, and we have a president with a one-week attention span and a population that will not be going along for the ride. We'd lose even they didn't have the minerals. Having the minerals is just a bonus for them.
I've long felt that China isn't built to wage military war, they wage war via business and economics. In that light, January 20th, 2025 might as well have been September 1, 1939.