When did firecrackers first originate in China? What is the basis?

Firecrackers are also called "explosives" and "cannons". In the Tang dynasty, it was called "explosive", and in the south, it was also called "paper cannon" and "cannon". If many firecrackers are connected in a string, they are called "firecrackers", "whipping" and "whipping". The origin of firecrackers is very early, with a history of more than two thousand years. According to records: "On the first day of the first month, chickens crow. In court, use firecrackers to ward off evil spirits. "

This means that people will sleep together at the beginning of the first month. The first thing is to put bamboo into the fire. The crackling of bamboo in the fire can drive away monsters. In the early Tang Dynasty, some people burned saltpeter in bamboo tubes. This is the earliest prototype of nitric acid firecrackers. After gunpowder appeared, people poured saltpeter, sulfur and charcoal into bamboo tubes and burned them, resulting in an "explosion". In the Tang Dynasty, firecrackers were called "explosives". There is a sentence in "Poems in Early Spring", which means "firecrackers".

In the Song Dynasty, people began to make a series of "guns" (firecrackers) with paper tubes and hemp wrapped in gunpowder. On the evolution of firecrackers, popular compilation and excellent records: "ancient firecrackers were all popular with real bamboo, so Tang poetry is also called explosion." Descendants are paper. It's called "firecrackers". There are many kinds of firecrackers. The time for setting off firecrackers is not limited to New Year's Eve. It begins on New Year's Eve and reaches its climax at midnight. Commonly known as "meeting God". ?

Firecrackers also have many names. Strafe-wrapped in kraft paper and covered with gunpowder. When it is loud, it is as clear and loud as steel. The whip collapses into a ball, which may be as many as 10000 "war whistle". Adding a special kind of firecrackers to the hanging whip is called "knocking whip", which is usually ten circles with rays. You can hear the rhythm of the sound when you place it. In southern towns, the "flower whip" wrapped in colored paper is very popular, and the colored paper broken by gunpowder will fall off when worn, which is very beautiful.