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| A compass |
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| A compass |
1.The magnetic adaptation for definition of parts of the world in the afternoon days.
2.Chineses used similarity of the pig-iron grenades filled with gunpowder.
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| Gunpowder |
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| Gunpowder |
3.Originally Chinese paper was used for packing, during an epoch of Troetsarstvija it was used for writting, at a dynasty of Tan there was a toilet paper and paper sacks for tea packing, at a dynasty of Sun — paper money.
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| A paper |
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| Publishing |
4.The technics of printing of wooden engravings was known in China since IX century.
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| Publishing |
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