Therefore, in order to study structure (also known as "knot" and "frame structure"), we must first understand the essence of calligraphy art; calligraphy is a semi-abstract and semi-concrete line art. It is the abstraction of the form of all things (including the image and movements of people themselves), and its structure, that is, the principle of composition, is also closely related to all things in the world. Generally speaking, the structure must be consistent to make every word vivid and vivid. principle. In order to meet this requirement, the calligraphy structure of any school must meet basic requirements such as stability, symmetry, and stipple echo. However, only studying "internal contact points" and "external contact points" can only solve the requirements of "symmetry" and "balance". In order to make each character full of vitality, such artistic principles as "stippling echo", "interspersing and avoiding", "elimination, modification and addition of decoration" etc., this "model character" structure is completely powerless.