China should do something that will exacerbate their inflation even further, as economic retaliation, as this is the US pain point, no matter what the fake data shows and underscores it. Then people will be squeezed even further, rebel faster, and the empire's core will collapse even faster. As opposed to doing something like targeting some individual 'American' companies like Apple or similar from operating in China, which is more like an international company. That will not affect the widespread imperial collapse much (if they are serious). Also, China pretty much switched most of its agricultural imports from the US to South America already. I think that they should therefore go for restricting exports of some super inflationary industrial categories like rare earths, industrial materials, chemicals, parts, machinery, pharmaceutical APIs, etc. But do this slowly to still leave a nuclear option on the table in case of an actual hot war. But, the tariffs already hurt the US more, so not much to do.