There are five 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 is divided into big seal script and small seal script, regular script is divided into Weibei and Tang Kai, and cursive script is divided into Cao Zhang, Cao Jin and Crazy Grass.