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One day the emperor discovered tea when leaves from a wild tree fell into his boiling pot of water.
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They needed to write on something softer.
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The Chinese built a Earthquake Detector because it would tell them when a Earthquake was happening. It could detect a earthquake 100 miles away!
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The Chinese built rockets to keep intruders away.
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The clock that they built is the clock that we use today.
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Gunpowder is used in a lot of their inventions.