According to Baidu Encyclopedia, wall poems are poems inscribed on the wall, which began in the Han Dynasty and flourished in the Tang and Song Dynasties. After the Han Dynasty, many people talked about walls. During the Southern and Northern Dynasties, there were more and more poems on the walls. In the Tang Dynasty, the poetry on the wall suddenly increased greatly and began to form an atmosphere. In the Song Dynasty, the wind of topic wall was in the ascendant, and many poems were recited in postal kiosks, post walls and temple walls, which was dizzying.
As far as the carrier is concerned, although the poems on the wall are all on the wall, it does not mean that any wall can be used. The city walls are divided into temple walls, stone walls, postal kiosks, temples and buildings. Writing about the temple wall is Song Like Su Shi's "Xilin Wall Title": "From the side of the ridge, it is different from the distance. I don't know the true face of Lushan Mountain, but toward which corner of the mountain. " People who write about stone walls are like an untitled poem by Tang Hanshan: "Living in Hanshan, everything is quiet, and there are no distractions in my heart."