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Period: 618 to 907
The Tang Dynasty
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Period: 626 to 649
Emperor Taizong
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Period: 690 to 705
Empress Wu; Ruled for only 15 years under her own name
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Period: 712 to 756
Emperor Xuanzong
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800
Gunpowder becomes widespread in China; People begin to use it in Fireworks and Firecrackers