Images in frontier fortress poems: bonfires, wolf smoke, horses, swords, armor, lonely cities, Qiangdi, geese, eagles and so on.
Features: First, a strong Han Dynasty complex. There is a typical cultural phenomenon in frontier fortress poems in Tang Dynasty: during the Han and Tang Dynasties, the troops going to war were called Han soldiers, the generals were called Han generals, the frontier fortress was called Han fortress, and even the moon in the sky was called Han Moon. Moreover, when referring to the surrounding ethnic minorities, the frontier poems usually follow the appellation of the Han Dynasty, calling the belligerent Xiongnu and its leaders Shan Yu and Zuo Xian. When praising war heroes, Huo Qubing, Li Guang, Wei Qing, Ban Chao and Ma Yuan in Han Dynasty are often mentioned to call for the return of heroic spirit. This kind of complex in Han Dynasty is not only the inheritance of history, but also the transcendence of history.
The second is the distinctive border characteristics. The natural landscape is mostly yellow sand and white clouds, glacier and snow-capped mountains, and the geographical areas are mostly the Great Wall, Yanmen, Mobei, Guan Yu and the Yellow River. The exotic scenery is mostly Qiang flute, Hu Jia, pipa and war horse. The figures are mostly garrisons, generals and conference semifinals. The classics are mostly pens, the Great Wall (Tan Daoji, Minister of Southern Song Dynasty) and Loulan. The music is mostly related to the frontier.