The Book of Wei Family IV has a great influence on the history of China's calligraphy. However, neither Wei Ji nor Wei Guan left any book theory. Wei Heng, the son of Wei Guan, has a four-body calligraphy, and his niece Wei Shuo, that is, Mrs. Wei, has a pen map.
Wei Guan's works: Dunshouzhou Folk Post is the only calligraphy work handed down by Wei Guan and one of the important engravings handed down in the Western Jin Dynasty. Its artistic value and historical value are very high. This post has basically lost its wave potential, from which we can see the change from Cao Zhang to today's grass.
He is the author of Mourning Instrument (Sui Shu's Annals of Classics) and Annotations on the Analects of Confucius (eight volumes). The Jinwen also contains comments such as "Please discuss the undressing table for fake burial", "Please use earth to cut nine products", "Play", "Play for Zheng Mosan", "Same Book" and "Same Wei".