How to solve the problem of hand trembling by practicing hard pen writing?

My hands used to shake, but now I have been practicing for several years and I feel nothing. Apart from being unfamiliar, hand trembling mostly lies in the constant tension when holding the pen, including when lifting the pen and when not lifting it, and the whole writing process is very tense. The correct writing process is to be nervous when you start writing and keep relaxed when you don't start writing. Before you start writing, look at the position of starting and putting pen to paper, such as long horizontal, keep relaxed before you put pen to paper, start to be nervous when you put pen to paper, brush once to the position of putting pen to paper, and then start to relax. The whole process should be fast to avoid shaking. When writing, it should be cadenced, loose and tight, important and urgent. When it's time to exert force, when it's time to exert force, we can solve the problem of trembling.