What are the ancient poems describing the frontier of the motherland?

Frontier poems

Tang Du Fu's Summer Night Sigh: "In the poor years, I miss Pigos and keep the frontier fortress."

He Jingming's "The General of the Desert" in the Ming Dynasty: "Flying symbols are inserted into the feathers to recharge their batteries, and even the camp sweeps the side."

A poem guarding the frontier

Tang Wang Changling's "Out of the Great Wall": "When the moon was closed in Qin, the Long March did not return, and the Dragon City flew in, Huma did not teach Yinshan."

Don William Wang's "Liangzhou Ci": "If you want to drink pipa, you should urge it immediately. I stopped laughing when I was drunk on the battlefield. You have fought several wars since ancient times. "