Hard pen calligraphy is too deliberate and uncomfortable to look at. How can I do it well?

Naturally, it's easier to write. Don't be too deliberate. Look at the works written by ancient calligraphers, not just the works of modern hard-pen calligraphers. Many hard-pen calligraphers' works feel deliberately stiff and not suitable for learning. The thickness is mainly caused by the speed and strength of writing. If you master the rhythm of writing, you can write thick and thin strokes. Speed and strength are mainly formed by speed and strength. Look more, and your eyesight will naturally improve.