You are comparing the city center facade of shiny cities that barely even had electricity 30 years ago, to shitty parts of the US like Detroit.
If you were to actually live and integrate in the countries where you think everything is great and shiny, you would understand that that only applies to the tourist-friendly city center that you have explored and that outside of it, things are bad and third world.
It is like a Japanese tourist from the countryside going to Manhattan and never going out of it or seeing society’s problems, saying that buildings are so much taller in the US compared to Japan.
China lol. You must know very little about the place.
China views work and workers as disposable and fungible commodities. Workers are given no rights and any self-initiative is frowned upon culturally as workers are expected to be instruments used for the whims of the all-powerful boss. If you do any normal job, your work won’t be “appreciated”.
If you own a company on the other hand, sure. For example you won’t need to follow any of the laws and so you can also dodge taxes.