They inadvertently found that a mixture of sulphur, saltpeter, and charcoal could induce an explosion. In medieval China, alchemists were people who tried to make an elixir of immortality as their supreme goal. Gunpowder was invented by Chinese alchemists during the Tang Dynasty. This printing technique made a great contribution to Western civilization as many more copies of books were printed much faster, leading to a wider sharing and development of education, knowledge, and communication. Moveable clay type printing could be more easily used in the West due to the small number of English letters (compared to the number of Chinese characters). His technique then spread to Korea, Japan, Vietnam, and Europe. Bi Sheng's great innovation gave birth to a revolutionary printing method, so he is called the "father of typography". Errors on the board couldn't be changed either.ĭuring the Song Dynasty, Bi Sheng carved individual characters on fine clay pieces, which could be used again after the printing was finished. Block printing used lots of wooden boards and became useless after one usage. Earlier, Chinese people had invented block printing, which employed engraved words on wooden blocks to print with ink on a board/paper.
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