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追答Inventions of Ancient China
Four Great Inventions of Ancient China -- printing
Block Printing
With the inventions of paper and ink, stamper gradually became popular during the Jin Dynasty (265-420), which was the early form of Carved Type Printing. Block Printing first appeared in the Tang Dynasty (618-907). The text was first written on a piece of thin paper, then glued face down onto a wooden plate. The characters were carved out to make a wood-block printing plate, which was used to print the text. Wood-block printing took a long time as a new block had to be carved for every page in a book.
It took a lot of time and energy as well as materials to prepare for printing a book, but it worked more effectively afterwards. This technology was gradually introduced to Korea, Japan, Vietnam, and the Philippines.
Yet, Block Printing had its drawbacks -- all the boards became useless after the printing was d
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哪个是火药，哪个是指南针，哪个是造纸术，哪个是印刷术
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