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The tea farmers grew small tea trees. Then they harvested them and they would make tea out them.
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The Chinese made the paper from hemp and from bark of mulberry trees. However, later on they began to use rags.
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An infectious disease is one that can spread from person to person, so they created a way to fight this disease off.
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The Chinese devised a clock that rotated once in every 24 hours.
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They used a technique called woodblock printing. Later on in the 10th century, the Chinese started printing books with pages.
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Playing cards were invented by Chinese. Today, playing cards are used all over the world.
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People called alchemists were the ones who started to make the gunpowder. They experimented with mixtures of chemicals to find something that could help humans live longer.
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The paper money was printed on a woodblock. Paper money is the most common currency used today.
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In the 11th century, the Chinese made weapons using gunpowder for the first time. Small bomb or grenades were lit and thrown by hand to cause damage.
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By 1300, most of Asia and Europe had found out about the rocket technology. First they were used for fireworks. Then later on they were used for weapons.
