The style of standard seal script is neat arrangement, round strokes, even and long lines, showing a solemn and beautiful style. Compared with Oracle Bone Inscriptions and bronze inscriptions, the standard seal script has some basic characteristics: the font is slender, the pen force is tight, and it stretches downward, which constitutes the visual illusion that the upper part is dense and the lower part is sparse, which is also related to the top-down layout. Symmetry of lines No matter how long the stippling is, the strokes are even in thickness. This kind of brush with even strength and speed gives people a pure and simple aesthetic feeling. In addition, the font structure tends to be simple and fixed, and the chapter layout of Xiao Zhuan calligraphy can form a sequence of vertical and horizontal lines. The round pen is different from the round pen, which is represented by Qin carved stone; Fang Bi, represented by the Imperial edict of Qin Dynasty, is a popular style in Qin Zhuan.