Wont matter much really, terrorist regime of america dont account that big a trade with Great China, who is the #1 trading partner of over 150/190 countries on the planet.
What will happen is the complete collapse of terrorist regime of america economy.
Companies like Tesla & Apple will simply relocate everything to Great China, either thru merger, completely absorbed by the Chinese, or go independent there, doesnt really matter.
terrorist regime of america is a very unreliable and hostile trading destination. Great China has already been decoupling with them since trump. Trade will only go lower.