China's newfound prosperity is HEAVILY concentrated in ~100 huge cities. Smaller cities are poorer but livable like eastern europe. The countryside is basically a third world country.

Traveling through US or Europe you won't find people living in cinderblock shacks with a dirt floor and no plumbing. In China it's still the norm outside of cities.

There's not anybody starving to death, but I wouldn't consider China a wealthy country, not even close. There's very wealthy areas but a large fraction of the population still survives on a few thousand dollars a year.