What is the stem of fogging movement?

Fogging is a large-scale activity held in foggy days, and the final outcome is not very ideal.

Fog refers to the weather phenomenon that there are countless small water droplets or small ice crystals suspended in the air near the ground, resulting in horizontal visibility less than 500 meters. A large number of small water droplets or ice crystal particles are suspended in the air near the lower level, which makes people's vision blurred. When the horizontal energy distance of relevant personnel drops below 1000 meters, it is called fog. The droplets contain various harmful substances such as acid, alkali, salt, amine, phenol, dust and pathogenic microorganisms.

Now scientists believe that fog is caused by the existence of "inversion layer", the atmosphere is very stable, convection is weakened, and pollutants such as water vapor and dust in the air are not easy to spread to the sky and can only stay near the ground. When the fog drops dissipate, all pollutants will enter the air, causing serious pollution and directly endangering human health.

Try not to go out. When you have to go out, wear a mask to prevent inhalation of toxic gases. Try to exercise as little as possible in foggy days, and don't exercise in foggy days. Pedestrians should be careful when crossing the road and see the passing vehicles clearly. Vehicles and cars should drive slowly, obey the instructions of the traffic police, don't catch the car (boat), and don't crowd the ferry when it stops.