What causes smog in Beijing?

Mainly due to the stagnant flow of air, tiny particles in the air gather and float in the air. The ground is dusty and the air humidity is low. People and traffic on the ground stir up the dust.

Car exhaust is the main pollutant emission. In recent years, there have been more and more cars in cities, and the car exhaust is a factor in smog. Secondary pollution caused by factories.

CO2 and other pollutants emitted by heating in winter!

But the reason is not important. What is important is how to reduce the harm to yourself.

I use ZRA. After driving it for half an hour, my nasal congestion becomes clearer and smoother!