At the beginning of creation, every calligrapher first folds a piece of rice paper into a certain format, so as to better reflect the beauty of calligraphy art and make the whole calligraphy work achieve accurate horizontal and vertical effects. The "grid" in calligraphy refers to the grid on the paper used to write words or seals. Novices sell printed temporary book check paper. At present, there are nine squares and other "changing nine squares", such as Gong Huige, Tian Zi Gege, Mi Zige Gege and Sixteen Gege. Once you are familiar with it, you can fold this format yourself. Because, no matter what font format, we should pay attention to cleanliness, horizontal and vertical. Even if you write cursive script, it is not required to be horizontal or vertical, but it must be rigorous and accurate. Therefore, manual folding has become a compulsory course in calligraphy learning.