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Advances in paper making and printing, including movable type, helped spread learning. Chinese porcelain became famous for its quality and beauty. The Chinese also discovered ways to make steel. They also had tea which they used for trading with the dutch
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Chinese alchemists looking for the secret of eternal life accidentally discovered working with a mineral called saltpeter. MILITARY TECHNOLOGY.
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Rocket technology was developed in china during the Song dynasty. Rockets were powered by a black powder made of saltpeter, charcoal, and sulfur.