When was the official script established in China? What are the main features?

Official script is a common solemn font in Chinese characters, with a slightly flat writing effect, long horizontal drawing and short straight drawing, and pays attention to "swallow tail of silkworm head" and "twists and turns". It originated in the Qin Dynasty and reached its peak in the Eastern Han Dynasty. Calligraphy is known as "Han Li Tang Kai". It is also said that official script originated in the Warring States period. Official script is relative to seal script, and its name originated from the Eastern Han Dynasty. The appearance of official script made China's calligraphy art enter a new realm, which was a turning point in the development history of Chinese characters and laid the foundation for regular script. Official script is flat, neat and exquisite. In the Eastern Han Dynasty, the painting methods such as skimming, pressing and pointing were beautified as upward provocation, with different degrees of severity and the beauty of calligraphy. Styles also tend to be diversified, which is of great artistic appreciation value.

According to legend, the official script was compiled by Cheng Miao, a calligrapher of the Qin Dynasty, in prison. It has been simplified, with the simplification removed, the font rounded and squared, the strokes straightened, and the word "Lian Bi" changed to "broken pen", which makes it easier to write from lines to strokes. As a start-up Qin Li, it has a large number of seal script, and then it has been continuously developed and processed, breaking the writing tradition since the Zhou and Qin Dynasties and gradually laying the foundation for regular script. Under the unification of the thought of "ousting a hundred schools of thought and respecting Confucianism alone", the official script of the Han Dynasty gradually developed into the dominant script, and at the same time, cursive script, regular script, running script and regular script were derived, which laid the artistic foundation.