Xi certainly couldn't free Tibet and stay in power. Tibet predates him.
Uyghurs are a tiny minority slave labor community of about 1 million; I won't say the police state prison system of the USA is good simply because it's better; at present. I won't mention the Native Americans because that predates Trump but that was far far worse. Or how aspects of their abuse mirror aspects of what goes on here; which at some point they may improve to be as shitty as we are... not that we'd notice here because when we do it we're largely blind but when others do the same shit we'll criticize. Hypocrisy is practically a virtue here in the USA; it is not in China, yet. Oh, the USA has 2 million in jail and like 5 million supervised; a way higher %.
Trump doesn't yet have the amount of power of Xi. He won't live long enough to be exposed to that level of corrupting power; though, he is already more corrupt in most every other way. Certainly way more embarrassing.
China is way more impressive that they progressed so quickly given their HUGE size. Learning from others is valid progress; and innovation is nearly always building upon the past. You can be upset that they didn't re-invent the wheel but nobody else really cares (and people rarely reinvent from scratch...furthermore, you likely are giving the USA too much credit for the work of other nations.) They will slow down when they have nobody left to copy and that is when the real competition begins. In many ways they will be better situated at that time. (which differs by topic when that is.)
The head start is being squandered by the USA and it's speed is being taken for granted. Others move at a long-term pace which isn't even really that concerned about the short term race. You chant USA and #1 all you want; it doesn't do jack but make you overconfident and lazy... as people like myself continue for some reason to prop you people up as you hate on us for going against your flat-earth narratives.
China is not 40 years behind the USA. Depends on what you look at so it's hard to really say. They manufacture better than the USA does already; they lack the quality control regulatory system but otherwise have beat us. For chips, they are behind; though the top chip makers are not USA... Intel is dying to catch up again. The USA has not had real competition in a long time; now they do and it has only begun... and the proof of our losses are in our desperate Tariffs. No, their tiny slave labor population is not how they lower prices. Poor regulations do help them; cheap labor does too - but they have infrastructure we do not. cheap electricity and free healthcare are massive benefits. socialist? sure. but so is free fire, police, and roads which drove down costs for the USA vs others. better infrastructure. we can't even maintain. they expand on what is infrastructure.
What is moronic (teenage) is to blindly cheer your team/tribe and not learn from the competition's progress even when they may lose current matches. They will catch up and win more often and you need to stop making excuses and get to work. The gap has been narrowing and you don't even notice. Reminds me of high school sports teams...(also moronic.) The next big concept for you is to realize that once it's competitive, it becomes almost random who wins the matches... the slightest bit of cheating makes all the difference in those situations. Also, it should mean a lot less who is #1 when it's so so close.
How did we stop China from reverse engineering our chips? We didn't. It's a manufacturing problem mainly.