Calligraphy, as a unique traditional art, the materialized form of its art is to write lines with a pen and form characters. It is through this materialized means that the art of calligraphy has realized the functions of creating artistic conception and expressing feelings. As Kang Youwei said, "The beauty of calligraphy lies in using a pen." Kang Youwei realized that the key to the quality of a calligraphy work lies in his mastery of pen skills, which is also the basis for writing a good work. Mrs. Wei in Jin Dynasty also fully reflected her emphasis on using pens in her pen drawings. At the beginning, she discussed the use of the pen: "People who are good at writing are bony, but those who are not good at writing are fleshy." The meaning of this sentence is: a person who is good at expressing the sense of stroke lines with a pen will show strong bone strength in his words; People who are not good at using pens can easily make lines weak. Wang Xizhi even thought: "A little loss is like a beauty disease, and an out-of-line painting is like a strong man's broken humerus." It means: a sentence with bad points is like a beauty's eyes are broken, and a bad line is like a strong man's arm is broken.
In a successful calligraphy work, brushwork and format are the main and foundation of calligraphy beauty, but the beauty of strokes alone cannot directly constitute the beauty of calligraphy. If the text is arranged like a pile of firewood, it will inevitably make people see things in a blur. The art of calligraphy with Chinese characters as the object of expression appears in the whole character, so the beauty of Chinese characters with strokes as the composition material is extremely important. "It is difficult to write with a pen, and gathering and dispersing vertically and horizontally is the most important thing." . This sentence appeared in Mr. Qi Gong's Poem on a Book, which means that when writing, how to master the structure of words is the most difficult, where to put each stroke and how to structure each stroke are the most important.