What you've written was true in 2016, but is not true now.

Only 15% of Chinese exports now go to the US.

As for food, there are two other big food producers, Australia and Brazil. Australia has an advantage in that it's a big island, so it's easy to have good biosecurity. Australian beef is superior to American beef as it's grass-fed, disease free, and doesn't contain steroids or hormones.

The smart play would have been to make an ally of Australia to block exports of food to China. But despite the USA having a rare large trade surplus with Australia, Trump put tariffs on them. Because he's a bully and a fool.

As a result, the Australians are furious with the US and have signed contracts with China to supply them with beef and pork.

I think Trump has dementia and the Republicans should have chosen another candidate.