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The chinese kept how to make paper a secret. Paper was made from the bark of a mulberry tree.
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The first compass was made out of a magnetic material called lodestone. Because earth has a huge maagnetic force from the north, the lodeston will always point north
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These paddles are powerd by people walking on treadmills. It works by the paddles on a wheel pushing the water back. The paddles move in a circular motion for it to work.
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The chise invented a segmant bridge which is stronger than a half circle. Also it takes less material and makes the bridge broader and flatter.
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The Chinese invented gunpowder by accident, by trying to mix substanses so you can live forever. They also tried to make gold out of cheaper metals. The gun powder was made out of saltpeter, charcoal, and sulfur. They used it to confuse their enemy and startle their horses. Later they used them as a weapon, which was a rocket.
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Porcelain is made by combining clay with the minerals quartz and feldspar. It is fired (baked) in something called a kiln. This makes the pottery white, hard and water proof. Theyve been making this since the 1st century and still used it in the 10th century, today we still use it.
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The chinses created other things from gun powder, such as the artillary shell It was used to confuse the enemy and sartle there horses. This was done by exloding and making a very loud sound
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At first rockets were used only for fire works. Rockets were powered by a black powder made of saltpeter, charcoal, and sulfur. They even created a two stage rocket. It propelled the rocket through the air, than it released arrows aiming at the enemy.
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Before tea became a popular drink in china it was reguarly used as medicine. Eurpoeans became involved in tea growing and trade by the 18th century.
