The so-called power of calligraphy, according to this shark's understanding, mainly refers to a basic kung fu, that is, stroke writing is like a "leak mark": water flows over and overflows to both sides. This requires you to keep your strength in the center of the stroke, and the speed of the stroke should be calm and even, so as to ensure that the ink has time to flow to the paper, not too much or too little, just enough to overflow. Such strokes are full and three-dimensional, like a big seal, which is very imposing. The pen is very smooth, but if the foundation of the real book is not enough, it will easily slip off. Therefore, the ancients practiced real books, emphasizing "pen and pen heart", which was nothing more than practicing the ability to control the running direction and speed of the pen tip. This is especially true when writing big characters.
As for my wrists and arms, I feel very clear when I write big characters by hanging my wrists. Many strokes are difficult to write well without the help of my upper arm. You can have a try. It is difficult for a company commander to write more than three inches of Chinese characters by his wrist. Because the wrist can no longer balance strength and speed.
China's calligraphy is very torturous ... Some people have been writing all their lives and achieved it.