Why are there no Li He's poems in the 300 Tang poems?

A: Three Hundred Tang Poems is a book of children's enlightenment education. In the inscription of "300 Tang Poems" in the Qianlong period of Qing Dynasty, the retired scholar of Hengtang pointed out that the book was compiled for "secular children to go to school". "There are dozens of poems in each style, and there are more than 300 poems, which are recorded as private school textbooks and the compilation of children and Xi." In other words, the collected poems should be easy for children to understand, easy to understand and catchy. However, later generations have commented on Li He's poems: due to excessive carving and curiosity, some works are obscure in meaning, piled with words, incomplete in artistic image and incoherent in emotional context. In addition, he likes to gallop in the world of fairy tales and ghosts, and convey the past to the present with myths and legends, thus constructing a mysterious and dreamy realm. His poems are often called "ghost fairy's words" and "ghost poems", which means "ghost". Therefore, his poems are not suitable for editing themes such as "secular children go to school", "Send children to Xi Zhi" and "Popular", and it is understandable that they are not included in "300 Tang Poems".