The "worm" in seal cutting techniques does not refer to insects, but refers to a kind of calligraphy-"worm book" and "worm manuscript", also known as bird manuscript and bird seal. Worm script is a special artistic font in bronze inscriptions. This brush stroke is similar to the shape of a bird. Some just decorated the shape of a bird beside the strokes. The biggest feature of this book is that it is neat, gorgeous, elusive and difficult to identify. Insect characters originated in the Spring and Autumn Period, Warring States Period, Qin and Han Dynasties. There are eight kinds of Erqin calligraphy in Xu Shen's Shuo Wen Jie Zi in Han Dynasty, one is Da Zhuan, the other is Xiao Zhuan, the third is engraving, the fourth is insect official script, the fifth is copying, the sixth is official script, the seventh is official script and the eighth is official script.
Worm books are mainly popular in the middle and lower reaches of the Yangtze River. As far as the related cultural relics unearthed in China are concerned, the records of insects flourished in ancient countries such as Wu, Yue, Cai, Chu, Zeng, Song, Qi and Xu. The difficulty of learning, writing and reading worm books has affected its popularity to some extent. At that time, the ancients thought it was a kind of "thankless" calligraphy art. For a long time, fewer and fewer people learned to write, and worm calligraphy was known as the elegant culture of "Chun Xue". During the Western Han Dynasty, characters were gradually replaced by popular and easy-to-understand documents.
Especially at the end of the Han Dynasty, Insect Classic was decorated on the flag with the image of various animals as the country. Representatives of religions, armies and generals. Although it was called "book" at that time, it essentially lost the function of words and became a kind of "totem".
As a special way of writing ancient Chinese characters, it is impossible to be perfect in books. However, its powerful writing skills occupy a certain position in China's ancient calligraphy-"Insect carving skills" are not omnipotent, and "magical powers" can only be mastered through a lot of efforts.