Lishu originated in the Qin Dynasty and reached its peak in the Eastern Han Dynasty. Calligraphy is called Han Li Tang Kai. Lishu, also known as Zuo Shu, Fenshu and Bafen, was popular in the Han Dynasty, so it was also called Han Li. It evolved from a round seal pen to a square-folded stroke, and the shape changed from slender to flat, tightened up and down, stretched left and right, and changed from slow to short, showing a lively and diverse atmosphere, which brought great convenience to the writer.
The characteristics of official script mainly include the following four aspects:
1, the structure of official script is changed to seal script visualization and symbolized by stippling.
2. The glyph of official script is changed to seal script, which is round and flat.
3. The strokes of Lishu have twists and turns and waves.
4. Fang Bi and the round pen.