Cursive script is a convenient font for writing. Its connotation can be divided into broad sense and narrow sense: broad sense cursive script refers to all kinds of scribbled writing methods in regular characters, such as Cao Zhuan, Cao Li and various shorthand and sketch in daily life; In a narrow sense, cursive script refers to Cao Zhang and Jin Cao, which are mature fonts with unified norms. Generally speaking, the so-called cursive script in calligraphy and philology refers to cursive script in a narrow sense.
The main reason for cursive writing is the speed requirement of daily practical writing. Any kind of writing style has the requirements of simplicity and easy writing, resulting in the trend of saving simple strokes and scribbling. This trend is the main reason for the evolution of characters. From the Warring States Period to the end of Qin Dynasty and the beginning of Han Dynasty, politics, military affairs and prison affairs were busy, public and private documents exchanged frequently, characters were used more and more frequently, and the requirements for writing speed were constantly improved, so the cursive script of seal script came into being, that is, cursive script.
In the Han Dynasty, on the basis of Cao Zhuan, the brushwork of Lishu, a popular font, was incorporated, and at the same time it was standardized and unified, thus forming Cao Zhang. Cao Zhang's name has been interpreted in different dynasties. One view is that it comes from the cursive script "Urgent Chapter" written by Historical Tour of the Western Han Dynasty. There is also a saying that Zhang Han loved cursive script and ordered him to write the paper in cursive script. There is even a saying that Emperor Zhang Han created cursive script.
It is generally believed that the "chapter" of the rules and regulations is synonymous with the articles of association and Zhang Kai's "chapter", which means rules and regulations, and conforms to the characteristics that the early cursive script slightly contains the meaning of official script, the characters are not related to each other, the strokes exist, and there are rules to follow.