Norilsk, Russia 
Note the clear view of sky and horizon in this picture. In Beijing you will never see those things.
Only because the picture is taken from high up, above all the low lying smog. Just look at the bottom and imagine what it looks like from there. Far worse.
cant believe that people actually live there.. amazing
i think i would move to another city/country asap if i was the one living there..
It's probably likely that if you live in a city like this, you don't have the means to relocate, because who would tolerate this willingly?