However, some cities expressly stipulate that fireworks are not allowed to be set off all year round, but most of them are first-and second-tier cities, which will be so strict, and third-and fourth-tier cities will be better and less strict. Because fireworks will pollute the air, they will produce gases such as sulfur dioxide, nitric oxide and nitrogen dioxide after discharge, which are toxic and harmful gases. Generally speaking, China will not completely lift the ban on fireworks and firecrackers in 2022, and the ban on fireworks is not put forward by one person, but by the government after considering various factors.