Why is there no smog in Shenzhen, but the smog in Chengdu is so serious?

First of all, let's understand the causes of smog. The visual obstacle caused by solid or liquid particles suspended continuously in the air is smog. Shenzhen is a high-tech city with less heavy industry. In addition, it is located in the south, near the sea, and the air humidity is high. Suspended particles in the air are easy to settle in water, so there is less smog. Chengdu is located in the basin and is called the city of stoves. The weather is dry, particles are difficult to settle, and there is more smog.

Nowadays, air pollution is becoming more and more serious. We should not only pay attention to the harm of smog, but also pay attention to the prevention and control of other harmful gases. It is recommended to install a fresh air system at home to minimize the time outside. My home is decorated with five-degree and five-constant central air conditioning, which can not only cool and heat, but also control the indoor air at constant temperature, humidity and oxygen, which is very good.