Betty
Paper making, gunpowder, printing, and compass。
Aug 8, 2021 1:31 PM
Corrections · 2
2
Paper making, gunpowder, printing, and compass。
In my opinion there should be only one greatest invention
August 8, 2021
Paper making, gunpowder, printing, and compass。
Those are all from China, right?
September 15, 2022
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