There is a folk saying in China that "there are firecrackers when you open the door". That is to say, when the new year comes, the first thing for every household to open the door is to set off firecrackers to bid farewell to the old and welcome the new. Fireworks are a specialty of China, also known as "firecrackers", "firecrackers", "firecrackers" and "firecrackers".
Historical sources:
According to legend, Nian beast originated from Pangu when he opened heaven and earth and was owned by Pangu. It is said that it is as big as a horse, with a long tail, a horn and a big mouth, and walks like a fly. However, after Pangu's death, these monsters disappeared inexplicably.
They each have four different natural ecological attributes, which complement each other. They not only have a long life, but also have fierce appearance, extraordinary strength and very agile actions. No one can tame them. Although they are fierce, they are said to be afraid of the sound of firecrackers, so people invented firecrackers to drive away ancient animals.