In italics:
Regular script is also called regular script, real script and official script. Li Shu, founded by Cheng Miao, has gradually evolved and become more simplified, flat and vertical. Ci Hai is interpreted as "square and straight, which can be used as a model." Hence the name regular script. It began at the end of the Han dynasty and has been popular until modern times.
The appearance of regular script follows closely Han Li's composition and pursues the further development of formal beauty. During the Three Kingdoms period at the end of Han Dynasty, the writing of Chinese characters gradually changed from wave to wave, and became "left" (dot), "sweep" (long left), "peck" (short left) and "lift" (straight hook).
Such as Wuwei medical bamboo slips and Juyan Han bamboo slips. Regular script is characterized by neat rules and is a model in fonts, so it is called regular script and has been used until modern times.
Regular script has the meaning of model, which was first 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"
It was not until the Northern Song Dynasty that the stupid names of official books were changed, and the contents of the scattered file circle were obviously different from the ancient names. The example of different names is probably the above.