According to legend, Li Shu was compiled in prison by Cheng Miao, who was not in the Qin Dynasty. By eliminating complexity and simplifying, the font becomes round and square, the strokes are changed to straight, and the font is beautiful and flat. Changing "Lian Bi" into "broken pen" and changing lines into strokes makes writing more convenient. "Liren" is not a prisoner, but a small official, that is, a small official in charge of documents, so in ancient times, Li Shu was called a "supplementary book". Lishu prevailed in Han Dynasty and became the main style of calligraphy.
As a start-up Qin Li, seal script has many meanings, and it has been continuously developed and processed. It broke the writing tradition since the Zhou and Qin Dynasties and gradually laid the foundation for regular script. Under the unification of the thought of "ousting a hundred schools of thought and respecting Confucianism alone", it was the official script of the Han Dynasty that gradually developed into the dominant script. At the same time, cursive script, regular script and running script were derived, which laid the artistic foundation and have not faded so far.