The world recognize that oldest metal movable type prin matter.

Internationally recognized movable type printing is Korean. In order to successfully apply for the invention right of movable type printing in the United Nations, it is necessary to have conclusive evidence, and South Korea can accurately produce tangible evidence of movable type and printed cultural relics. The first evidence is the world's oldest metal movable-type printed matter "Baiyun Monk copied Buddha's points in mind and body"! Can you, China, produce any evidence older than this? Another evidence is that the technical reduction of metal movable type printing is completely feasible and the invention is successful! Of course, the international appraisal organization also appraised the clay movable type printing in China. First, according to the detailed records of pottery movable type printing invented by Bi Sheng, the inventor of the Northern Song Dynasty in China, the technology was restored, and it was found that pottery movable type printing was not compatible with banks and could not be printed. For example, when printing, mud characters will be broken, fonts will be unstable and easy to fall off, and a lot of ink will be polluted.

Therefore, after international appraisal, the clay movable type printing invented by China and Bi Sheng only stays in the theoretical experimental stage, and it is just an idea, which has not been implemented and popularized, let alone invented successfully! In addition, in the ancient history of China, clay movable type printing was never used.

? It has always been blank, that is to say, from the Northern Song Dynasty to the Ming and Qing Dynasties, printing was completely inefficient, and time-consuming and laborious block printing and clay type printing were not used. From this aspect, it can truly reflect that clay type printing is not technically feasible and unworkable. Otherwise, it's really hard to explain why even China people don't adopt their own inventions. In the end, Korean metal movable type printing was only recognized by UNESCO. After the successful application, South Korea incorporated it into the textbooks of future generations of primary schools.

Of course, there is no need to change China's textbooks. It can still be said that movable type printing was invented by China, but remember that the metal movable type printing that really benefits the people has nothing to do with China. Please make it clear.