Clouds of toxic smog take over the city in seconds!

The city of Bejing, in China, is often overwhelmed by the smog it produces, making it necessary to close schools, offices, and to impose a rigid traffic block.

Nonetheless, you still do not really have any idea how serious the situation can be! 

In fact, this video, which was recorded by a British citizen who lives and works in China, can help us to understand much better. 

This is a 20-minute time-lapse video showing how a wall of smog quickly rises and accumulates as soon as the traffic intensifies!