Where is the progress of movable type printing compared with block printing?

The key point is that this kind of "living" block printing can print hundreds or even thousands of copies, which has played a great role in the spread of culture. However, rigid printing is time-consuming and laborious, and it often takes several years to print large movable type books, which requires a lot of space to store plates and is often damaged by deformation, moth-eaten and corrosion. Small quantities of books that don't need to be reprinted become waste. In addition, typos found in lettering are very difficult to correct, and it is often necessary to re-engrave the whole lettering. Movable type plate making just avoids the shortage of engraving. As long as enough single movable type is prepared in advance, you can make up at any time, which greatly speeds up the plate making time. After printing, movable type can be disassembled and reused. Moreover, movable type occupies less space than lettering and is easy to store and keep. In this way, the superiority of movable type is revealed. The idea of printing with movable type has a long history. Bi Sheng invented movable type printing, which improved the printing efficiency. However, his invention did not get the attention of the rulers and society at that time. After his death, movable type printing was still not popular. The clay movable type he created was not preserved. However, the movable type printing technology he invented has been passed down. Zhou Bida (1 129~ 1204), a native of the Song Dynasty, was once known as Ming Jigong. In his later years, he studied Bi Sheng's methods from Shen Kuo and printed his own works. He also made a small change, changing the iron plate into a copper plate. Copper plate has better heat transfer than iron plate and is easy to melt glue, but copper plate is more expensive than iron plate. In the Yuan Dynasty, Yao Shu (120 1~ 1278) advocated movable type printing. He taught his son Yang Gu to print books with movable type, which became a record of Zhu's primary school and recent thoughts, as well as his History of Donglai Classics. However, Yanggu clay type was improved by Song people after Bi Sheng, not the original technology in Bi Sheng. In the sixth year of Emperor Kangxi of Qing Dynasty, Zhai Shiqi was an official in Raozhou, collecting magnetic households and writing The Book of Changes. According to experts' analysis, the so-called celadon (movable type) may be ceramic movable type fired from porcelain clay for making celadon. 17 18 a native of Taian, Xudong, made pottery movable type and printed the Book of Changes. He calcined clay, made movable type, and used it for typesetting and printing books, still using the method used by Bi Sheng.