Crazy grass calligraphy.
Calligraphy font is the classification of calligraphy style. There are five kinds of traditional calligraphy fonts: running script font, cursive script font, official script font, seal script font and regular script font, which are five categories. In each category, it is subdivided into several sub-categories. For example, seal script can be divided into big seal script and small seal script, regular script can be divided into Weibei and Tang Kai, and cursive script can be divided into Cao Zhang, Cao Jin and Crazy Grass.