The center line of the vertical line of calligraphy regular script is aligned with the center of gravity of the horizontal line, so that the written calligraphy looks good. Every word has a center of gravity, and the center of gravity of a single word lies in the dense strokes. The center of gravity of the left and right structures should be on a horizontal line, and the words of the left, middle and right structures should be consistent. The characters with upper, middle and lower structures should be laid horizontally with the densest strokes, and the center of gravity of horizontal lines should be aligned to conform to the regular script rules. Hey.