There are three elements in calligraphy appreciation and evaluation, namely, the level of skill, the depth of skill and the elegance and vulgarity of character. Among these three elements, in fact, the ancients have always emphasized that the meaning of law is the aesthetic core of calligraphy art, and techniques and techniques can be classified into the category of law in calligraphy, and words or forms can be said to be the pursuit of meaning. Personally, I further understand that this is also the concrete embodiment of the relationship between art and Tao in a broad sense in calligraphy art.