Cursive script can be divided into broad sense and narrow sense. Broadly speaking, regardless of the times, all scribbled words can be regarded as cursive. In a narrow sense, that is, as a specific font. Formed in the Han Dynasty, it evolved on the basis of official script for the convenience of writing. It is characterized by simple structure and continuous strokes. Early cursive script and official script were parallel, generally called official script, but in fact some forms of seal script were mixed.
In the process of creation, cursive script is also called book, and Zhang Zhijin's biography (general's post) is his masterpiece.