It is said that "Cao Zhang" was named after the minister of Emperor Gaozu Zhang, and he wrote this paper in this font. It is also said that "Cao Zhang" was created by Emperor Zhang Han; It is also said that "Cao Zhang" was named after the calligrapher You Shi of Han and Yuan Dynasties used this font to write "Jicao".
In short, "Cao Zhang" was very popular in Han Dynasty. Zhang Zhi, a great calligrapher, appeared at the end of the Han Dynasty. He got rid of the traces of official script strokes preserved in Cao Zhang. The strokes between the upper and lower characters are often connected, and the radicals are borrowed from each other, which becomes "modern grass", commonly known as cursive script.
In the Tang Dynasty, Zhang Xu and Huai Su wrote "today's grass" unscrupulously, and the strokes kept going back and forth, and the font changed, resulting in "Crazy Grass". This shows that Zhang Zhi is the ancestor of "this grass"; Zhang Xu and Huai Su are the ancestors of "weeds".
Cursive writing is a convenient way to write. Said in Shuo Wen Jie Zi; There are cursive scripts in Hanxing. The cursive script began in the early Han dynasty, and its characteristics are: keeping the outline of characters, damaging the official rules, rushing away and rushing away quickly. Because of the meaning of grass, it is called cursive script.
Judging from the development of cursive script, the development of cursive script can be divided into three stages: early cursive script, chapter cursive script and this year's cursive script. Early cursive script and official script were parallel, generally called official script, but in fact some forms of seal script were mixed.
One of the main features of cursive symbols is the linking of strokes, including up-and-down linking and left-and-right linking. The lateral tendency of Li Hua's brushwork provides a foundation for the grass planting of the left and right hooks. Cao Zhang's brush strokes use a shape, and today's brush strokes use an S-shape. This is the fundamental difference between the two. Those with unrestrained brushwork and messy stippling are also called "big grass" or "crazy grass".