How can I practice hard pen? Copybook for calligraphy's hard pen.

Calligraphy learning is very simple: first, selecting posts (this is very important, which needs to cater to your own aesthetic and writing habits, and only those that suit you can get twice the result with half the effort), second, practicing plans (breaking posts into strokes and learning step by step), and third, learning methods (which need to be practiced regularly and quantitatively every day). If you follow this method, you can improve your writing level by studying hard for two months.

If you want to practice regular script, I suggest practicing regular script first. As the saying goes, regular script is like standing, walking is like walking, and grass is like running.