Regular script is a modular body, as mentioned in Zhang Huaiguan's "Shu Duan". People in the Six Dynasties still used it habitually, such as Yang Xin's Cai, and On the Biography of Wei Shou, saying, "Shou is a general, and Jingzhao people are good at regular script." That's the abbreviation of "eight-block method", which didn't replace the name of the official book until the Northern Song Dynasty, and its content was obviously different from the ancient name. There is probably an example of the above.
Regular script is the most popular script in China feudal society from the Southern and Northern Dynasties to the Jin and Tang Dynasties. Before the appearance of regular script, China calligraphy had produced three styles: Da Zhuan, Xiao Zhuan and Li Shu. Generally speaking, the ancient characters before Xiao Zhuan are collectively referred to as Da Zhuan, including Oracle Bone Inscriptions, bronze inscriptions and six languages except Qin in the Warring States Period. Xiao Zhuan is a popular script after Qin unified China. On the basis of Qin script, refer to other vassal scripts. In order to facilitate writing, it is standardized and unified. This is the first standardized regular script in the history of calligraphy in China. Official script is another representative character after Xiao seal, which is based on Xiao seal. The appearance of official script is a great revolution of Chinese characters. Its significance lies not only in the symbolization of Chinese characters, but more importantly, it has changed the writing style and aesthetic trend of Chinese characters, thus laying a foundation for the emergence of regular script calligraphy art and further opening up a broad world for the development and prosperity of China calligraphy art.