China version type. Relative to the name of the codex and engraving. There are three concepts in writing a book: ① Early times. Books before the Tang Dynasty were written by hand, so they didn't need to be printed, so they were collectively called book editions. After the Tang Dynasty, woodblock printing developed gradually and became more prosperous in the Song Dynasty. However, books written by hand in the Tang and Song Dynasties are still called writing books. 2 high status. Regardless of the times, regardless of whether engraving is popular or not, manuscripts are written by famous scholars and are often called manuscripts, not manuscripts. The content involves religion, such as Buddhist scriptures and Taoist scriptures. Copiers are often called scripture writing, not copying, because they have faith and piety in religion. In addition to these three situations, since the Yuan Dynasty, everything that is re-disseminated and re-written according to a manuscript is usually collectively referred to as codex. As for my own works, copying and circulating by myself are called manuscripts, not manuscripts or manuscripts.