During the Wei, Jin, Southern and Northern Dynasties, calligraphy theory achieved unprecedented development and gained a lot. The main ones include "Four Styles of Script" (written by Wei Heng), "Clerical Script" (written by Cheng Gongsui), "Cursive Script" (written by Suo Jing), "Xingshu Zhuang" (written by Jin Wang Min), and "Cursive Script" (written by Suo Jing) "Yang Quan", "Fei Bai Shu Shi Ming" (written by Liu Shao, the above is the Western Jin Dynasty), "Bi Zhen Tu" (written by Mrs. Chuanwei), "Shu Lun", "Inscribed on Mrs. Wei's Bi Zhen Tu", " "Twelve Chapters on the Theory of Writing Style and Preface" [written by Wang Xizhi, unreliable, the above is the Eastern Jin Dynasty], "Cleaning the Names of People from Ancient Times" (written by Yang Xin), "On the Book of Books" (written by Zanhe eight "On the Book", " "Praise for the Meaning of Writing" (written by Wang Sengqian), "Zhimu of Chinese Characters" (written by Wang Min), "On Book List" (written by Jiang Shi), "Discussing Calligraphy with Emperor Wu of Liang Dynasty" (written by Tao Hongjing\"Ancient and Modern Book Review" (written by Yuan Ang Zhuan>, "The Twelve Meanings of Guan Zhongyao's Calligraphy", "Cursive Script", "Comments on the Pros and Cons of Ancient and Modern Calligraphers" (written by Emperor Wu of Liang), "On Calligraphy" (written by Yu Yuanwei), "Book Quality" (written by Yu Jianwu) "Compiled by", "Ti Youjun Yue Yi Lun" (written by Monk Zhiyong, the above is the Southern and Northern Dynasties), etc. These works have an important position in the history of the development of calligraphy theory.
As a place of calligraphy and calligraphy theory during the Jin and Southern and Northern Dynasties The achievements achieved laid a solid foundation for the prosperity of calligraphy in the Tang Dynasty.