I have only heard great things about China from people who have lived there.
- state-owned utilities keeps costs for electricity, gas and water incredibly low
- food is cheap and plentiful
- over the past 2 or 3 decades, their economy has grown at an unprecedented rate
Older generations have literally witnessed the country transform thanks to the industrial revolution. Living standards in China now easily surpass what we enjoy in the West. Work pays well (relative to cost of living, although this is ofc dependant on industry, city and province etc)
The fact the Government does not have to worry about democratic elections means it can run far more efficiently. They make long 10-year plans that they KNOW they can implement fully. The power of the CCP also means they don't have a slow, cumbersome and beauracractic process that bleeds money out of building projects and so on. The scandal of HS2 would never happen there (certainly not to the degree it has happened here), thanks to the efficiency of the system. So public money is well spent, and the government wants to invest in the country's infrastructure.
Conversely, there are downsides too. While privately complaining about the government won't get you into trouble as such, you can certainly find yourself in hot water for things you post online, or say in public. Something everyone in China is aware and mindful of.
Fuethermore, their State-owned media simply cannot be trusted to fully report the facts and is often filled with propaganda. Alongside that, mayors of provinces can feel the wrath of Beijing and not have any power to do anything about it.
The one key difference, to me, is the lack of regulation and enforcement of certain rules. You can park pretty much anywhere you want. There are very few construction regulations. Healthy and Safety laws aren't really a thing. What you see on the groud can often feel chaotic, disorganised, and dangerous. But it's also free in a way that we no longer have here in the UK (for better or worse).
Another aspect of Chinese society that is often missed by foreigners who live there is the State's interference in people's lives. There are constant directives issued that curtail freedom of expression, especially for the LGBTQIA+ community.
China is an incredible place. Yes it's far from perfect. But i would argue the UK isn't actually that much different. It's more expensive here, but with arguably just as many laws and regulations that curtail our freedom. It'a just not quite as direct or as obvious as the Chinese system.