Wow, nice air quality.....you can almost see across the street!
Is that guy wearing the fedora a chinese Bane?? 
The city of Chengdu, way to the west in China, and from which the US launched its first incendiary attacks against Japanese positions in China in WWII, is in the heart of the industrialization movement in China today. One of my clients has an office there, and inside the building, inside the data center, the room with the servers and routers, the industrial dust collects quickly. The air smells bad too, and your clothes, even those not worn while there, have to all be laundered upon your return. So yeah, lovely air quality.