Because of setting off firecrackers

It can increase the atmosphere of Chinese New Year.

And it is not allowed to set off firecrackers because of individuals, just like Beijing opera.

Peking Opera and setting off firecrackers have spread from China to this day.

If it is forbidden to set off firecrackers, what's the point of having a reunion dinner and collecting lucky money during the New Year? If fireworks and firecrackers are prohibited, it is just like Beijing Opera. There is no gap with the west. Moreover, setting off fireworks and firecrackers can also make those children who soak in their studies every day feel the fun of the New Year.