I'm there right now, visited Shanghai, Suzhou, Chengdu. In most populous cities you can't see past a few km because of what first appears to be fog in the morni

I'm there right now, visited Shanghai, Suzhou, Chengdu. In most populous cities you can't see past a few km because of what first appears to be fog in the morning, but then you realize is smog. Tap water is always undrinkable.