After ten years of defending the blue sky, atmospheric governance has hardly relaxed. In September 2013, the "Air Pollution Prevention and Control Action Plan" (referred to as the "Ten Air Pollution Prevention and Control Measures" in the industry) was launched under the name of the State Council, which is the first comprehensive action plan in China to address prominent environmental issues. The "Ten Atmospheric Regulations" clearly state that by 2017, the concentration of fine particulate matter in the Beijing Tianjin Hebei region will decrease by about 25%. Among them, the annual average concentration of fine particulate matter in Beijing is controlled at around 60 micrograms per cubic meter. This goal was considered to require extraordinary efforts to achieve at the time. Over the past decade, China has drawn the fastest curve for global air pollution control. Liu Bingjiang, Chief Engineer of the Ministry of Ecology and Environment, once recalled, "In the past decade, many long-term problems that were long wanted but not solved have been solved, and many major events that were previously wanted but not achieved have been achieved. Continuously understanding the causes and sources of heavy air pollution is an important part of this. Nowadays, people can access real-time PM2.5 and ozone 8-hour indicators, which were added to the "Environmental Air Quality Standards (GB 3095-2012)" that were implemented in February 2012. In 2011, "haze" occurred frequently, and PM2.5 entered the public eye of China. Prior to that, although some scientists had conducted research on pollutants including PM2.5, there was no consensus on what caused the "haze". Many research teams are trying to understand the "cause" and prescribe "prescriptions". In the opinion of Chai Fahe, former vice president of the Chinese Academy of Environmental Sciences and deputy director of the National United Center for Air Pollution Prevention and Control, this requires repeated scientific tests to verify. Taking coal-fired boilers as an example, first measure the emissions of various pollutants from the boiler, how many pollutants can be emitted by burning one ton of coal, and then analyze the impact it has on environmental quality. Is it worth thoroughly solving this problem. The results have proven that loose coal is indeed a very large source of pollution in the entire Beijing Tianjin Hebei region. Chai Fahe said that the early measures for controlling loose coal were not yet "coal to gas" or "coal to electricity", but rather advocated for "good buildings and good use of coal", using clean coal, energy-saving boilers, and other methods to minimize pollutant emissions. However, it is not realistic to install numerous pollution control devices on a household's gas equipment. As research deepens, researchers have a more comprehensive understanding of the issue of loose coal. Chai Fahe stated that the government has played an important role in providing financial support for the control of loose coal in some cities from Beijing, Tianjin, and Hebei. Under scientific guidance, in recent years, Beijing has completed the clean energy transformation of 15000 tons of coal-fired boilers and nearly 700000 households have been converted from coal to clean energy. Currently, there are basically no coal-fired boilers in Beijing and the plain areas are basically "coal free". In China, the number of coal-fired boilers has decreased from 520000 in 2013 to less than 100000 in 2022, reducing coal consumption by 400 million tons. Many rural residents bid farewell to the smoky and fiery way of using energy. In the view of Chai Fahe, before the implementation of the "Ten Atmospheric Measures", the annual decrease in PM10 was only 1% -2%, and it is necessary to make the Beijing Tianjin Hebei region rich in fine particulate matter