The small seal script is also called "Qin seal script". During the Qin Dynasty, Li Si was ordered to unify the script, and this script was Xiaozhuan. Popular in the Qin Dynasty. The shape is relatively long, evenly rounded and neat, and it is derived from the large seal script. Xu Shen of the Eastern Han Dynasty, "Shuowen Jiezi·Xu" said: "The first emperor of Qin initially took over the world, and... let alone those who did not agree with Qin Wen. (Li) Si wrote the "Cangjie Pian", and Zhongche Mansion ordered Zhao Gao to write the "Yanli Pian" ", Taishi ordered Hu Wujing to compose the "Bo Xue Pian", all of which were based on the large seal script of Shi Zang, or they were slightly modified, so-called small seal scripts. "The remaining stones of "Langyatai Stone Carving" and "Taishan Carving Stone" are now preserved (as shown in the picture). That is the representative work of Xiaozhuan.
The small seal script engraved on Qin Quan is said to have been written by Li Si. After Qin Shihuang unified China, he implemented the policy of "writing with the same text and carts with the same track" and unifying weights and measures. Prime Minister Li Si was responsible for it. On the basis of the large seal script originally used in China, it was simplified, canceled the variant characters of other six countries, and created a unified Chinese character writing form. It remained popular in China until the end of the Western Han Dynasty, when it was gradually replaced by official script. But because of its beautiful font, it has always been favored by calligraphers. And because its strokes are complex, its form is ancient, and twists and turns can be added at will, seals were carved in seal script, especially official seals that required anti-counterfeiting, until the fall of the feudal dynasty and the emergence of new anti-counterfeiting technology in modern times. All characters in the Kangxi dictionary are also written in Xiaozhuan.