It evolved from the seal of auspicious words in Qin and Han Dynasties. In addition to carving auspicious words, poems, aphorisms and self-discipline words are often carved. Artists who are good at seal cutting and calligraphy and painting generally have many seals. These many seals, except the name and font size, are collectively called "idle printing" in Indian studies.
Origin of evolution: Leisure stamps evolved from seals engraved with auspicious characters in Qin and Han Dynasties, and became quite popular after Song and Yuan Dynasties. It is called "leisure chapter", but it is not "leisure". In modern times, leisure chapter has developed into an indispensable part of China's painting and calligraphy art, and its content is very extensive and interesting. Painters either make up their own words or extract aphorisms from leisurely chapters to show their understanding of life and art.
Main forms: leisure articles, generally including "introductory articles", "corner articles", "auspicious articles", "warning articles", "collection articles", "appreciation articles" and "lent, hall, pavilion and living room articles". Its form is informal and varies in size, generally greater than or equal to a famous seal. Traditional literati painting in China pays attention to the integration of poetry, calligraphy, painting and printing. When appreciating paintings and calligraphy, we always start with the appreciation of the seal and identify the knowledge and accomplishment of the painter from the seal. A good leisure chapter is not only interesting, but also a silent self-expression of seal engravers and painters. Therefore, there is a saying that "idle chapters are not idle" and "idle chapters are fun".