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The Chinese made compasses by getting a pice of magnetic material. The magnetic material they used is called lodestone. They used the compass to navigate at sea.
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The paddlewheel boat was used to sail on rivers, canals, and lakes. The paddlewheel boat made water travel much faster. They are much easier to steer.
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The arched bridge helped a lot in china. It took up less material and the bridges were stronger. Also the bridges were broader and flatter. The segmental arched bridge was a huge revalution in china.
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The mechanical clock is much more acurate than the other clocks of the time. It made a complete turn in a circle every 24 hours. Dripping water made the clock turn.
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Gun powder was made by alecumist tryiny to make a entreal life substance with salt peter, but by acident they made gun powder.
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The paper money was made with wood printing blocks. Untill paper money the only curency was coins. Now paper money is the most common curency in the world.
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The game card were made with wood block printers on thick paper. Then famous artist would add designs to the cards.
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The flamethrower was the first chinese weapon that used gunpowder. The flamethrower works with a mixture of gunpowder and oil. The chinese used flamethrowers to spray there enemies with fire.
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The Chinese invented rockets. At first they used them in fireworks but than they used them for war.
