Because this is a statement from the early stage of poetry development.
Liu Xie's "Wenxindiaolong·Ming Poems" mainly discusses five-character poetry, but it also talks about "four-character orthodox style" and "five-character style", and does not recognize the role of five-character poetry in the poetry world. its due status. However, Zhong Rong pointed out that the four-character form is outdated. "Every time the text is complicated but has little meaning, it is rarely practiced in the world." Five-character poetry is in the ascendant. "It is the most important part of literary works and is the flavor of all works." It plays an important role in poetry. In terms of the basic characteristics of "instructing things and shaping things, and writing things with emotion", it is "the most detailed". This discussion opens up a theoretical way forward for the historical development of poetic form.