/kloc-what should I write on the calligraphy paper with 0/30 characters?

Write regular script, running script, official script and cursive script. The content is positive aphorisms or aphorisms, or famous sayings, or Tang poetry and Song poetry. In short, choose the style and content of your favorite book to write, hang it on the wall, and examine the distance between your written works and the image every day. If in doubt, please accept.