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Fireworks are a class of explosive pyrotechnic devices used for aesthetic, cultural, and religious purposes. The most common use of a firework is as part of a fireworks display. A fireworks event is a display of the effects produced by firework devices. Fireworks competitions are also regularly held at a number of places. Fireworks take many forms to produce the four primary effects: noise, light, smoke and floating materials. They may be designed to burn with flames and sparks of many colors, typically red, orange, yellow, green, blue, purple, and silver. Displays are common throughout the world and are the focal point of many cultural and religious celebrations. The earliest documentation of fireworks dates back to 7th century China, where they were invented. The fireworks were used to accompany many festivities. It is a part of the culture of China and had its origin there; eventually it spread to other cultures and societies. Important events and festivities such as the Spring Festival and the Mid-Autumn Festival were and still are times when fireworks are guaranteed sights. China is the largest manufacturer and exporter of fireworks in the world. (via Freebase)