As for the beauty of children, the so-called "thin and coquettish" covers Shen Song, the ancient times, the anger, and the loneliness and elegance, which makes people have a unique possibility in ancient and modern times.
As for Du Fu, it is probably the so-called "national style" and "Li Sao", including Shen Quanqi and Song Wenzhi. Tracing back to the source, it can be compared with the ancient poems of Su Wu and Li Ling. The poetry is more powerful than Cao Zhi and Liu Kun, and better than Yan Yanzhi and Xie Lingyun. At the same time, it has the elegance of Xu Ling and Yu Xin, various styles of ancient and modern times, and the unique style of every famous contemporary poet.
This is Yuan Zhen's evaluation of Du Fu. The poets mentioned are all famous poets who made great achievements and made outstanding contributions in the history of ancient poetry in China before Du Fu.