During the Spring and Autumn Period and the Warring States Period, there were great differences in languages among countries, which was a major obstacle to economic and cultural development. Qin Shihuang annexed the world, and Prime Minister Li Si presided over the unification of the national characters, which was a great achievement in the cultural history of China. After the unification of Qin Dynasty, this script was called Qin Zhuan, also known as Xiao Zhuan, which was simplified on the basis of Jin Wen and Shi Guwen. As a representative of the famous calligrapher Lisi, the carved stone of Mount Tai in Qin was highly praised by all previous dynasties. Qin is a period of change of inheritance and innovation. The preface to Shuo Wen Jie Zi says: "Shu Qin has eight styles, one is Da Zhuan, the other is Xiao Zhuan, the third is seal cutting, the fourth is insect book, the fifth is copying, the sixth is official book, the seventh is dead book, and the eighth is official book." It basically summarizes the face of the font at this time. Li Zhimin, a pioneer and professor of Peking University, believes that Qin Shihuang's unification of the six languages was of positive significance to the social progress at that time, but it was not necessarily conducive to the development of calligraphy art [1].
The appearance of official script is a great progress of China characters and a revolution in the history of calligraphy, which not only makes Chinese characters tend to be square, but also breaks through a single center in brushwork, laying the foundation for various calligraphy schools in the future. In addition to the above calligraphy masterpieces, there are also handwriting such as imperial edict, weight, tile and coin. In the Qin dynasty, the style was very different. Calligraphy in Qin Dynasty left a brilliant page in the history of calligraphy in China. Like the majestic Great Wall of Wan Li and the spectacular Terracotta Warriors, it is the forerunner and the crystallization of the infinite wisdom of the Chinese nation.