It’s not supposed to be like this. What with the central planners of the Chinese Communist Party in charge. And yet like pretty much every really big government regime outside of the tiny Nordic countries (and even there sometimes) there is massive pollution.
In socialist countries the planners call the shots, and despite what many of our “progressive” friends might think, those in government don’t typically have “the public” in mind. This is the great myth. It’s as obvious as the smog hanging in the Beijing sky.
In China the connected get to breathe and make money. The people on the outside of the crony system (and just outside) get to deal with atmospheric filth.