< Epang Palace Fu > In the middle of the garrison, the soldiers shouted, the valley of letters lifted, and the Chu people were torched, which was pitiful and scorched.

the king of Qin swept Liuhe, looking at him! Swing a sword to make clouds, and the princes will come to the west. (Tang Li Bai's "Antique")

"Mountain Sheep Tongguan Nostalgia" is a Sanqu work by Zhang Yanghao, a writer of Yuan Dynasty. This is what he did when he went to Shaanxi for disaster relief via Tongguan. Looking back on the past, this song, from the rise and fall of dynasties to the people's suffering, points out the opposition between feudal rule and the people, and shows the author's thinking about history and sympathy for the people. The starting point of this kind of sympathy and care is the Confucian thought of helping the people by running the country, which is common in the traditional five-seven-character poems, but rare in the Yuan Dynasty Sanqu. The whole song adopts a layered and in-depth way, from writing the scenery to reminiscing about the past, and then arousing discussion. It perfectly combines the boundless scenery, deep emotion and elaborate discussion, and has a strong appeal. The lines between the lines are full of historical vicissitudes and a sense of the times, which not only has the characteristics of nostalgia for ancient poems, but also has a distinctive depressed style.