Is Liu Ti suitable for practicing hard pen calligraphy?

Of course. To practice calligraphy, you must first have perseverance and maintain a good emotional state. Words written in a good emotional state are truly spiritual. I have been practicing calligraphy for five years. Personally, I think it is worth trying to truly understand calligraphy, whether it is a hard pen or a brush. In your spare time, you should read more copybooks and see the changes in the length and thickness of strokes. It may be easier to practice writing brush first. Brush strokes are almost enough. Then try to write with a pen, which is better. Note: If you want to write some fonts, you'd better read celebrity copybooks. Some teachers write irregularly.