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The invention of printing is a representative of the wisdom of the working people in ancient China. Its contribution to human civilization is immeasurable. Therefore, some people call printing the "mother of civilization", which is more appropriate.
Bi Sheng invention type printing
From 1041 to 1048 AD, in order to overcome the insufficiency of engraving and printing, civilians rose up to make words in clay. One word is a seal, which is burned hard and made it ceramic. When preparing a typeset, first prepare an iron plate, and relax the mixture of incense, wax, and paper ash on the iron plate. There is an iron frame around the iron plate. The iron-framed frame is full of prints to be printed. It is filled with a version. Then use fire to bake, the mixture is melted, and it is combined with the movable block, and the hot plate is pressed on the movable type to make it literally flat. You can print. In this way, India and Taiwan cannot talk about efficiency. If there are more prints, tens or even thousands of copies will be more efficient. In order to increase efficiency, two iron plates are used, one for printing and one for typesetting. After printing one piece and the other piece is re-arranged, this method is used interchangeably and is very efficient. Commonly used words such as "Zhi", "Ye", and so on, each word is made of more than 20 words, in case there is a duplicate within the use. Unprepared rare characters are carved out temporarily and fired immediately with vegetation. The words removed from the printing plate are placed in a small wooden box of the same character, and the labels sorted by rhyme are affixed on the outside for retrieval. At the beginning of his life, wood was used as a type of wood. Experiments revealed that wood grain density was not the same. After water, it was easy to swell and deform, and it was difficult to remove it after consolidating with the adhesive.
Printing is one of the four great inventions in ancient China. It and the compass, gunpowder, and papermaking are collectively known as the four great inventions of ancient China.