What should I pay attention to when practicing hard pen calligraphy?

1. Hold the pen correctly. 2. Apply force correctly. Swing your wrist horizontally and hook your index finger vertically. When writing horizontally and vertically, don't use force with your thumb. Holding the pen only plays an auxiliary role. Pay attention to press hard under the index finger. Don't hold the pen too hard, as long as you can turn the pen. 4. the words should be stretched, and each word only highlights one stroke. 5. Study the size and position of the root and the length of each stroke. That is, the structure of regular script characters.