China's market has been *very* hard to enter because they are trying really hard to kick out global competitors to prop up their domestic counterparts in the hopes that those companies can compete with Silicon Valley (e.g. Temu, Deepseek).
Unfortunately I don't see those restrictions being lifted any time soon. These also include censorship measures against entire companies which they don't like (i.e. which don't delete content the CCP doesn't like at will), so what you have is this "solar system" where half of the stars and moons were pulled into the nearby black hole.
But in that case, what USA should have done, is to prevent Chinese companies to enter USA market? If they are preventing you to enter China, then you prevent them to enter USA and then you are doing both the same thing. So why people are mad at Trump? Because he didn't do tic for tac, he didn't go eye for an eye, he did something totally brand new, giving them a chance to totally change things and make China look like they are right.
Because while China did prevented American companies to enter (or at least make it very very difficult) they did not increase tariffs out of nowhere, whereas Trump did. What he did was like if China did helped the Chinese, thanks to what China did, Americans can't enter and Chinese make more money this way. What Trump did hurts Americans probably more than Chinese, but even if Chinese are hurt a lot, that doesn't mean Americans are not hurt by this, and that is why it's the Americans that are mad. They are saying if Trump wants to do something, then do it, but do something that hurts the Chinese alone, not the Americans.