People set off firecrackers to welcome the dancers.

人们燃放鞭炮，欢迎舞者的到来。

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Others set off firecrackers to ward off evil spirits.

NPR: Earthquake Rocks China's Sichuan Province

Long strings of firecrackers were set off in the narrow streets of the French Quarter, enveloping the entire block in smoke.

CNN: ASIANOW - TIME Asia | Asia Buzz: Firecracker Freedom

Throughout the Chinese New Year holidays, fireworks and firecrackers are traditionally set off to ward off evil spirits when ushering in the new year.

BBC: China media: New Year haze