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For more than 500 years, the chinese were the only people in the world that knew the secret of making paper.
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After inventing paper the chinese invented printing. The printer first drew characters (symbols) on paper, then glued the paper on to a wooden block.
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Tea was made by letting tea leaves steep in boiling water. Tea was drunk mostly for medicine.
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Before paper money coins were the only form of currency. Paper money was printed with wood blocks.
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The chinsese divised a wheel that makes a full turn every 24 hours. Dripping water makes the wheel turn.
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Alchemist experimented with mixtures of natural ingrediants trying to find a substance that might allow people to live forever.
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Printers used woodblock printing to make the cards from thick paper.
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The cinese used flamethrowers to spray enemies with a steam of fire.
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Rockets were powered by a black powder made of saltpeter, charcoal, and sulfur. At first they were only used in fireworks then later on they were used as weapons.
