As follows:
Cursive script is a font of Chinese characters, which can be divided into broad sense and narrow sense. In a broad sense, regardless of the age, all scribbled words are regarded as cursive. Narrow sense, that is, as a specific font, was formed in the Han Dynasty and evolved on the basis of official script in order to write simply. Because cursive script is too simple and confusing, it can't replace official script like official script instead of seal script.
About from the Eastern Jin Dynasty, in order to distinguish it from the new cursive script at that time. The cursive script of the Han Dynasty was called Cao Zhang. The new cursive script is relatively called today's grass, which is divided into big grass (also called crazy grass) and small grass. It feels beautiful in madness. As Li Zhimin said: "Come near the pool, consider the reason, get the heart from things, realize the image, and then enter the beauty of cursive script.
In order to facilitate writing, after a long process of convention, especially in the period of the transformation from seal script to official script, the popular cursive script has gradually increased and the writing method has gradually unified. After the process of quantitative change to qualitative change, a cursive script with statutes was finally produced, that is, Cao Zhang, which further developed into today's cursive script. In a narrow sense, cursive script refers to Cao Zhang and today's grass.
Its basic content includes the following three aspects: cursive script is a kind of character with omitted strokes and simple structure. Cursive script is the most symbolic style, with stippling as the basic symbol, replacing radicals and a certain part of characters. The cursive strokes echo each other, which is convenient for writing quickly and expressing the writer's feelings.