In a Chinese firework shop you find both fireworks and crackers.
- Originally fireworks were associated to happy events such as Chinese new year
- Crackers were used both for sad and happy events such as a burial, a wedding (EDIT I was mistaken... sorry). In fact, firecrackers are thought to have the power to fend off evil spirits and ghosts that are frightened by the loud bangs.
Nowadays it doesn't matter that you use for fireworks and crackers.
The more noise and the more lights, the better.
Hunan Province his a world famous producer place for fireworks. Most companies are based in a city called Liuyang and they export worldwide. Liuyang is the birthplace of firework. A Chinese monk named Li Tian, who lived near the city of Liu Yang in Hunan Province, is credited with the invention of firecrackers about 1,000 years ago.