It used to be banned in many parts of the country, but now most fireworks are set off. Are all the manufacturers of firecrackers going out of business because of the ban on fireworks? In order not to close down, the country must have let these firecrackers go. Everyone feels noisy, not only because of noise, but also because of air pollution, especially in the north. The smog was already serious, and firecrackers were still being set off. The air must be getting worse.