Xiao Zhuan was formed before and after Qin Shihuang unified China. Dazhuan originated in the late Western Zhou Dynasty. Physical features: The seal script is rectangular in shape, with horizontal and vertical strokes and thick and consistent lines. The characteristics of Da Zhuan are line drawing, simple and vivid lines and relatively complete glyph structure. Historical significance: Dazhuan is the earliest stone inscription and the ancestor of stone carving. On the basis of China's first systematic and unified writing, Biography once again standardized the writing style.

The time of origin is one of the most important differences between Da Zhuan and Xiao Zhuan. Dazhuan, which originated in the late Western Zhou Dynasty, evolved from ancient Chinese characters. Xiao Zhuan, formed before and after Qin Shihuang unified China, was simplified and evolved on the basis of Da Zhuan originally used by Qin State.

Dazhuan is also known as Zhou Zhuan, Shuan Wen, Shuan Zhuan, Shuan Shu and History Book. During the Zhou Xuanwang period, Taishi Biography compiled the first generation of ancient prose and wrote 15 Great Biographies, hence its name. Nowadays, Da Zhuan is common in Shuo Wen Jie Zi and all kinds of Zhongding Yi wares collected by later generations, among which Shi Guwen made it the most famous in this period. Big seal characters are divided into Xia seal characters and Zhou seal characters according to time.