Originally Posted by
moondog
Funny, it's on twitter which is blocked in China (sans VPN).
Originally Posted by
jiejie
For air quality, definitely not. Sanya esp the last 3 years is plagued by haze and construction dust particles. I'd guess of major cities, Lhasa. Though some would argue that's not actually "in China"....

Go high, go west, and go out of the city. Yes, Lhasa is clean. Sanya (though I haven't been there myself) is not.