A large number of frontier poems were left in the 300 years of Tang Dynasty. I try to choose as many works as possible and arrange them in chronological order, so that we can see the spiritual outlook of the Tang Dynasty in different historical periods.
The general in "The Battle of the South of the City" has a purple plug, and his modus operandi is greed. The two armies fought in the north of Yanmenguan, and our army and the enemy occupied positions in the south of the city. Carve a bow and turn at night, and the iron rider knows the ginseng. The soldiers fought hard at night and should have rested during the day, but they didn't stop until the battle was won and had a good sleep.