Point is the basis of calligraphy artistic modeling and the basic unit of Chinese characters. Painting is the development of points, and painting is the general name of basic strokes such as horizontal, vertical, left and right. Pen is the way to use a pen when conducting, that is, how to use a writing brush.
Knot refers to the shelf structure of a word, that is, the layout and spatial arrangement of a word. Composition refers to the layout and arrangement of the whole work, and how to arrange a few words reasonably on a page to form a complete picture.