If you use monochrome painting and lines to define sketch, there will be too many classics. China's calligraphy art, Zhang Xu's Wild Grass, Huai Su's Monk's Autobiographical Post, China's line drawing art Wu Daozi (biography), Eighty-seven Immortals Volume, and Wu Zongyuan's The Battle of the Immortals in Yuan Dynasty are all wonderful and endless. You can refer to the art history of China. If we only look at the time when the sketch name was established, we should pay attention to the introduction of western paintings to this day! Classic Sketch You should pay attention to the "Xu Beihong era", after all, people of that era planted sketches in China. After the founding of the People's Republic of China, colleges appeared and put forward the slogan that all shapes are based on sketches. Basically (it doesn't mean that there is no sketch), the main reason is that the stereotyped model of "sameness" has no vitality. Classics can only be found before the founding of the people's Republic of China. Due to the limitation of publication, many China's classic sketches can't be seen at all, and most of them can be seen in the college entrance examination. As long as you have the heart to find it, I believe you will find it.

Sketches of Shi kuo and Jiang appeared after the founding of the People's Republic of China, but their essence was also classified as "Xu Beihong era" because they were the legacy of the Republic of China.