In ancient poetry, flowing water is often used to express the feeling of the rise and fall of the dynasty.

Wan Li high city, I am sad, willow like Tingzhou.

At the beginning of the cloud, the sun sank and the rain came.

Under the bird's voice, there are green grass in Qinyuan Xi, and cicadas and yellow leaves in Han Palace autumn.

In the year when pedestrians happened, the old country came to Wei from the East. The night view of Xianyang West Building refers to Xianyang East Building.

The East Building of Xianyang City is a poem by Xu Hun, a poet in the Tang Dynasty. This poem is promoted by clouds, sun and wind and rain, and rendered by green grass and yellow leaves, which outlines a gloomy and desolate artistic conception and expresses infinite feelings about the decline of home country through the abandonment of the Han Palace in Qinyuan. Through the description of the scenery, the poet gives abstract feelings a form, and at the same time presents rich life experiences and profound thoughts on history and reality. The whole poem is a masterpiece of Tang poetry, which is full of scenes and feelings, unique and beautiful scenery, sad feelings, desolate meaning, vast territory and lofty spirit.