1. Pay attention to the efforts and achievements in language production; 2. No allusions; 3. Good at writing scenery and chanting things, the highest one is rich in "essence" and "interest", and the style is deep and elegant; Its spirit is weak and humble, and its style is shallow and thin. These characteristics summarized by the Song people are indeed the overall creative tendency of most poets in the late Tang Dynasty and belong to the characteristics of the times. "Elegance" is a very high realm, but in fact, most of them belong to seeking elegance from vulgarity and taking vulgarity as elegance. As a concrete reference, the connotation of "Late Tang Style" was generally stable for most of the Song Dynasty, generally referring to the era style of late Tang poetry. Jia Dao, Zhang Ji and Wang Jian, mainly Jia Dao, were explicitly mentioned as the objects of "Late Tang Style", so some people called them "Jia Daoge". Due to the five laws of Jia Daoyao, the founder of Yongjia Four Spirits in the late Southern Song Dynasty, although Ye Shi and others did not directly associate them with the late Tang Dynasty, by the end of the Song Dynasty, some people called the five laws of Jia Daoyao and Yongjia Four Spirits "late Tang Dynasty", and by the beginning of the Yuan Dynasty, Fang Hui also called the poems of "Nine Monks" and others in the early Song Dynasty "late Tang Dynasty".