What is the main reason for foggy weather?

My answer: when the fog comes, no one can beat it. The fog is like a ghost. Whenever people forget its horror, it will appear immediately and disturb the lives of ordinary people. This time is no exception. The arrival of foggy weather has brought different degrees of influence to many large and medium-sized cities. How serious is it? The headlines of all websites are reports about foggy weather, and the headlines of news broadcast are also directed at foggy weather, which shows the seriousness of the form. In June last year, Wuhan and other cities in central China already experienced large-scale foggy weather. Although the official explanation afterwards was that the neighboring province burned straw, the gray horror scene at that time was still frightening. Is this smog weather caused by straw burning? At least not yet. The air quality in Yichang city is not particularly good these days. Even as a national garden city, it is difficult to stop the invasion of smog, which also triggered my thinking about smog weather, more accurately, my personal doubts and expectations. The first thing that comes to mind is, is this a problem caused by the rapid industrial development in various cities? Of course, the occurrence of smog is not only caused by human factors, but also by meteorologists. However, we cannot ignore the impact of industrial development on urban air quality. I still remember that during the Beijing Olympic Games, in order to give athletes a beautiful blue sky, the government not only moved Shougang, but also asked Shougang to stop production and limit production during the Olympic Games to minimize its air pollution to Beijing. After the Olympic Games, the industry made a comeback, and the exhaust gas once again enveloped the capital. Industrial development is one of the driving forces of a city's economic growth, and many cities are built around a factory. Without industry, there would be no modern civilization of mankind. If industry prospers, so will cities. But how should we face the negative impact of industry on the environment? When the speed of industrial development exceeds our acceptable range, do we have the courage to stop the steps we have taken? Don't forget, bloggers, the transformation of China also means the transformation of industrial structure. Secondly, in urban construction, it is easy for us to see the magnificent scenery of high-rise buildings rising from the ground, but it is difficult to find green scrolls with lush grass. Even if there is, it is not the main color of the city. Most cities have only one color, gray. Although the tall building is magnificent, it is cold. Where is the green forest garden full of vigor and vitality? A city that doesn't know the environment will be punished by nature. We have learned about the power of sandstorms before. After we finally repel the sandstorm, the foggy weather will come again. If we don't strengthen the environmental construction of cities, what will be the next natural punishment? Finally, I want to say, just as news broadcast calls for people to travel less by private car, when the city is constantly polluted and eroded, everyone should try to contribute their positive energy, even if your positive energy seems insignificant. The city is the city of every blogger. If you don't pay and change, you won't get your dream about the urban environment. In fact, having said so much, the ultimate goal is our life and development, which should be based on the principle of economic priority or environmental priority; Whether to pursue short-term GDP data or long-term sustainable development vision; Whether to continue to endure the smog weather year after year, or make up your mind to change the hidden worry. If we continue to act in the existing way, the slogan of beautiful China will eventually live in seclusion in the distant horizon with the changes of the times.