Movable type printing is an ancient printing method and one of the four great inventions in ancient China. First, make a model of the original text and inverted text of the single word, then select the single word according to the original, arrange it in the font plate, ink it and print it, and then remove the font after printing, so as to use it again in the next typesetting. The invention of movable type printing is a great technological revolution in the history of printing. Movable type printing is an ancient printing method and one of the four great inventions in ancient China. After making the text, first raise the text mode, then arrange the text on the carriage return according to the selected article, print it with ink, and then put down the font after printing until the next typesetting. The invention of movable type printing is one of the greatest technological revolutions in printing. During the Northern Song Dynasty (65438 +004 1- 1048), Bi Sheng of China (about 970- 105 1) invented the movable type printing of clay marks. He was the first inventor in the world, about 400 years earlier than the movable type printing of German Johannes Gutenberg. The clay movable type invented by China (about 970- 105 11048) used in Li Qing in the Northern Song Dynasty marked the birth of movable type. He was the first inventor in the world, about 400 years earlier than the movable type printing technology of German Johannes Gutenberg.