Calligraphy dispels doubts. I asked my friends in the calligraphy group the following questions, but I didn't get the answer. I hope some big shot can help me.

Fonts can be divided into brush fonts and hard pen fonts. Of course, the hard pen depends on the brush. Brush fonts can be roughly divided into Oracle Bone Inscriptions, inscriptions on bronze, small seal, big seal, official script, regular script, regular script, regular script, running script and cursive script. These fonts are recognized by the mainstream and handed down. However, among the major calligraphy schools, due to the outstanding background of the times and personal achievements, such as Ou Zhao's Four Books, Song Style and Pavilion Style, etc. In fact, there are mainly seal script, official script, regular script, original script (Weibei) and cursive script. Hard pen font is nothing more than writing the book on it with a hard pen. Print fonts, such as bold, song style, imitation song style, line style, etc. Are the products of the digital age. You can find a large area at a glance, and it is still increasing.