Why are Liuyang people rich?

The main industry is fireworks. Liuyang, located in Changsha, Hunan. Although it is located on the border of Hunan and Jiangxi, it is called the throat of Wu Chu, and the city has won many honors. Liuyang people are rich because the main business is fireworks, and there are countless fireworks factories, large and small, which really generate a lot of income for Liuyang.