How to master the power of hands when practicing Chinese calligraphy?

When practicing calligraphy, you should always hold the pen tightly (a force that others can't easily take away). Next, it depends on what style you are practicing. For example, every calligrapher has his own style and you have to experience it yourself. In the center of the copybook, there is a trend of pen movement that can be used for reference, such as a sentence: generally, it is light pen-rotation-pen lifting-heavy pen-rotation.