Deng Zhuanshu was written after the first year of Jiaqing, and it is Deng's calligraphy handed down from ancient times. Its brushwork is sharp, its bones are as strong as cotton wrapped in iron, its brushwork is calm, and its brushwork is like silkworms spinning silk, especially with the official pen as the seal. When studying this post, you should observe it carefully and deeply understand its changeable brushwork characteristics. As far as collection is concerned, there are both reverse collection, introverted and implicit, and reverse entry and exit, which is easy and smooth. The strokes of his arc painting are either lifting and turning to see the circle or closing to see the square strength. These subtle changes in the use of pens must be in place and must not be excessive when studying. We must do what Sun said, "Those who observe are still refined, and those who seek are also expensive." In terms of suffix, Deng's seal script strives for a unified white method, which makes every seal character appear stable and serene, but it drags on in the blank, thus forming the unity of opposites of sparse, virtual and real. When dealing with uniform and dense white cloth, we should also pay full attention to the parallel, symmetrical, embracing and opposing relationship of lines. In addition, the serrated lines of Deng's seal script are also an important aspect that cannot be ignored. The zigzag arrangement of seal script lines is often the key to creating vividness. Wang Shuyun, a scholar in A Qing, said: "Seal script has three essentials: first, it should be round, second, it should be fine, and third, it should be uneven. Round is power, thin is thin, and uneven is neat. One of the three is lost, slave book ear! " We should keep this in mind when writing Xiao Zhuan.