"Haiyue Famous Sayings" has this record: "Mi Fu, a doctor of calligraphy, summoned him to ask about the number of people in this dynasty who were famous for their books. Haiyue asked each of them, saying: "Brush "Zi" refers to the use of the pen, which refers to the center stroke, which is quick, vigorous and calm. Su Dongpo said that he "winds the manuscript in a rush, calmly and happily." "("Dongpo Collection"), Huang Shangu said that he "quickly studies the formation with a sword, and shoots thousands of miles with a powerful crossbow. The calligrapher's writing style is also limited to this. "" Valley Inscriptions and Postscripts" Although Su Huang does not specifically talk about his brushwork, he can also provide the best understanding of "brush calligraphy". Mi Fu believes that ancient calligraphy is mostly "one stroke calligraphy", while he himself is "eight-sided". ". Source: Calligraphy House. The Calligraphy House is a calligraphy learning base. This is a kind of reform and creation of the legendary brush. Mi Fu calls himself "brush calligraphy". On the one hand, it is a summary of his own brush use. On the other hand, it is a summary of his own brush use. On the other hand, he also summed up the characteristics of calligraphy in a simple and easy-to-understand way, and used the golden needle to judge people. What kind of language? Or if you ask for work, you will go too far to teach, which is of no benefit to the scholar. "("Hai Yue's Famous Quotes") "Brush" is vivid and concrete, without any pretentiousness.