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The earliest Chinese paper was probably made from hemp and then the bark of the mulberry tree.paper.For more than 500 years, the Chinese were the only people in the world who knew the secret of making paper.
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The chineses printer first drew characters (symbols) on
paper. He then glued the paper to a wooden block. When
the glue was dry, the printer carved out the wood around
the characters, leaving the characters raised on the wood. -
The clock was more accurate than earlier time devices.
The chinese devised a wheel that made one complete turn every 24 hours. Dripping water made the wheel turn. Every
quarter hour, drums would beat; and every hour, a bell would chime. The sounds let people know what time it was. -
During the Tang Dynasty, the first tea-plant seeds were brought to Japan. Tea cultivation became an industry there by about 1200. Europeans became involved in tea farming and trade by the 18th century. Dutch traders brought seeds from Japan and China to their colonies in Indonesia.
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Paper money was printed with wood blocks. Song printers were usingmultiple wood blocks to print each bill. A single bill would have many colors.
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Alchemists accidently disovered gunpowder while experimenting with saltpeter. They thought it could extend life, but instead it could be used to make an explosive powder.
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Printers used woodblock printing to make gamecards from thick paper. Famous artists drew the designs that appeared on the backs of the cards.
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Early flamethrowers contained gunpowder mixed with oil. The Chinese used them to spray enemies with a stream of fire..
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Rockets were invented during the Song dynasty and were powered by a black powder made of saltpeter,charcoal, and sulfur.At first, rockets were used only in fireworks. Later, the
chinese used them as weapons.
