Why Liuyang, Hunan Province is the hometown of firecrackers?

On New Year's Eve, military families happily set off fireworks and firecrackers in the yard to welcome the arrival of the New Year. Look! Colorful fireworks bloomed in the night sky. Listen! The crisp firecrackers echoed in the air. How happy and warm this festive night looks. The army is very happy. He jumped up and shouted, "mom, this fireworks is really beautiful." The firecrackers are really loud. " Mother said, "Jun Jun, do you know where these firecrackers are made?" I don't know. Jun Jun said. Mother told the army: "The fireworks and firecrackers we bought are made in Liuyang, Hunan Province, and Liuyang's firecrackers are very famous. The production of firecrackers there began in the Tang Dynasty and flourished in the Song Dynasty. So until now, firecrackers have become a traditional product of Liuyang. Fireworks master carefully prepared all kinds of firecrackers and fireworks products by using local paper, soil nitrate and explosives. Liuyang firecrackers have a long history, many varieties, good quality and are famous at home and abroad, so Liuyang is called "the hometown of firecrackers". Liuyang's fireworks and firecrackers not only meet the needs of the domestic market, but also are exported to all parts of the world. "