What are the classification of ancient book prints according to the nature of movable type?

The value and use value of cultural relics can be divided into: unique edition, secret edition, rare edition, rare edition and popular edition. According to the different treatment, it can be divided into: over-recorded copy, school-based copy, approved copy, etc. Official seal: refers to books printed by public funds or some state institutions or units before the Qing Dynasty. China woodblock printing books began in the Tang Dynasty. Starting from the Five Dynasties, imperial academy began to collate and engrave scriptures, which was the first time that officials engraved books. In imperial academy in Song Dynasty, the central ministries, academies, departments, bureaus, temples, local, state and military official departments, local, state and county schools, warehouses, counters and ministers' warehouses; In the Yuan Dynasty, Xingwen Department, Guangcheng Bureau, Zhongshu Province, Hangzhong Province, various Confucianism and local academies; In the Ming Dynasty, imperial academy, central ministries, hospitals, internal supervisors, vassal governments, ministries, state and county governments, and schools at all levels; Wuying Hall, Neifu Prison, central ministries, local administrative and cultural institutions at all levels, provincial official bookstore, etc. Books funded or engraved by these units can be called official engraving. Since then, Fujian bookstores have continued to develop. By the Ming Dynasty, there were still many bookstores in Beijing, Suzhou, Yangzhou, Hangzhou, Huizhou, Changshu and Jianyang. Bookstores in the Qing Dynasty spread all over the country, but some of them only sold books, not editors. The books carved by these bookstores in past dynasties can all be called fangke.