How did the idiom "carving a worm" come from? What insects are carved?

The skill of carving insects first came from "Northern History"? In Biography of Li Hun, one day Li Hun said to Wei Shou: I'm not as good as Qing. The national code is in the chapter, and Qing is not as good as me. ? It means writing articles, I am not as good as you, making laws and regulations, and you are not as good as me. ? Insect carving skills? It wasn't carved by a bug. ? Bugs? Is it a kind of? Worm book? , is a kind of calligraphy, and it is the same kind of calligraphy as Da Zhuan and Xiao Zhuan. This is a hieroglyph. That font looks like bugs and birds.

Li Hun is a minister of Beiqi, and he is very knowledgeable. Gao Yang ordered him to organize some ministers to discuss and formulate new norms and regulations, including the famous literary historian Wei Shou. In fact, Li is very arrogant. Some people look down on Wei Shou and think that Wei Shou is inferior to him. Satire Wei Shou through that passage. This is the earliest place. There is also an allusion related to the great poet Li Bai.

Han Chaozong, a native of Chang 'an in the Tang Dynasty, was born in an official family and was warm-hearted. He often recommended some young literati to work in the DPRK. Many young people rushed to Han Chaozong for help. One day, Han Chaozong met a young man. Young people recommend themselves to show their ambitions. I specially wrote a letter to Han Chaozong, the content of which was magnificent and supercilious. In addition, a poem I wrote is attached to the end of the article, which reads? Afraid of carving small skills, not an adult? I'm afraid all my articles are just trivial tricks, which are not enough for adults to appreciate. The book "Youth to Han Chaozong", the famous book "Jingzhou with Han", is about this matter. This young man is Li Taibai, a poet.

Worm books originated in the Eastern Zhou Dynasty and were generally engraved on weapons. This kind of writing appeared in the Spring and Autumn Period and was used for flags and seals. Carving insects first refers to calligraphy, which is an artistic font evolved from official script. This is an artistic writing for decoration, not another systematic writing. The form is larger than the surface text and cannot flow on the surface of the snail book.