Official script, also known as Han Li, is a common solemn font in Chinese characters. The writing effect is slightly wide and flat, with long horizontal strokes and short straight strokes. It is in a rectangular shape and pays attention to "silkworm head and wild goose tail", "Twists and turns." Official script originated in the Qin Dynasty and was developed from Cheng Miao's form and theory. It reached its peak in the Eastern Han Dynasty and is known as "Han Li Tang Kai" in the calligraphy circle.