What is the idiom story "Three Points into the Wood" about?

Wang Xizhi is an outstanding calligrapher in ancient my country and enjoys a high reputation in history. His handwriting is both beautiful and vigorous, which is not easy; think about it, generally Beautiful words will appear soft, while vigorous words will appear rough, but he is able to transcend the secular world and be good at both.

It can be seen that his calligraphy skills are profound. I am afraid that this is not something he is born with, but is acquired through diligent study and practice. One day, he wrote the words on the wooden board and showed it to the carver to carve. The man first whittled the wood with a knife, only to find that the handwriting penetrated three-thirds of the way into the wood. This incident caused a sensation in the entire capital, and "three-thirds of the way into the wood" became a well-known idiom.

Extended information:

The phrase "penetrating into wood three points" comes from Zhang Huanquan's "Book Break" of the Tang Dynasty. It is said that the calligrapher Wang Xizhi of the Eastern Jin Dynasty was writing on a wooden board. Deep. Later, "three points into the wood" was used to describe the power of the calligraphy pen, and also to describe the profound and precise insights and discussions. Wang Xizhi's most famous calligraphy works include "Preface to the Lanting Collection" and "Huang Ting Jing".

Wang Xizhi's handwriting is so good, although it has something to do with his talent, but the most important thing is because of his hard practice. In order to practice calligraphy well, whether he was resting or walking, he always thought about the structure of the calligraphy, tried to figure out the frame and momentum of the calligraphy, and kept tracing the lines on his clothes with his fingers. So over time, even the clothes on my body were scratched.