1, the northeast border of China was dark and filled with smoke. In order to repel the barbaric invaders, our generals left their families behind. This sentence describes the urgency of the border war in the Tang Dynasty and the general's determination to go to war.

2. They walked through the Yushu Pass with the sound of gongs and drums, and they waved a row of flags around the stone tablet. This sentence describes the spectacular sight of the mighty army opening Shanhaiguan.

3. Until their captain in Shahai gave the order with feathers, the hunting fire of the Tatar chieftain flashed along the Wolf Mountain. This sentence describes the emergency of the war and the fierce enemy situation. Half of us were killed at the front, but the other half are still alive, and the beautiful girls are still singing and dancing for them at the camp. This sentence writes a contrast between the fierce fighting of soldiers and the arrogance of generals.

In autumn, the desert is full of grass, the sun sets, and there are only a few surviving watchmen by the lonely wall. In late autumn, the frontier fortress is desolate and the lonely city is desolate.

Serve the just cause and despise life and enemies. However, despite what they have done, Elm Street is still unsafe. This sentence tells the reason why the Lord underestimated the enemy because of the emperor's favor, which led to the failure of the war and the inability to break through.

Still in the front line, the real armor is worn out and thin, and the jade chopsticks will cry after leaving. This sentence describes the hardships of soldiers who are far away from home, the long-term battle and the sadness of their wives after leaving.

7. Still in this southern city, the young wife's heart is broken, while the soldiers on the northern border are looking forward to going home in vain. This sentence describes the wife's feeling of missing her husband and the helplessness of inviting people to look forward to their hometown.

8. The gale cut off our men's progress, and there was nothing in the vast territory. This sentence describes the turmoil in the frontier and the desolation and barrenness in the distance.

Three times a day, the dark clouds of slaughter rose over the camp. All night, the drums on the hour trembled and gave a cold rumble. This sentence describes the fighting atmosphere on the battlefield, the biting cold wind at night and Diao Dou's voice.

10, until white Jian Qing can see the light of day and be splashed with red blood. When death becomes a responsibility, who will stop to think about fame? This sentence describes the spirit of soldiers encouraging each other in the fight to the death and dying for their country without seeking fame.

1 1, snow-like sweat steamed on horseback, freezing a five-coin pattern. This sentence describes the scene of a war horse running in cold weather, with snow on its hair and sweat frozen into ice.

12, back and forth, day and night, leaving messages, thousands of families look up at the dust. This sentence describes the tense war and frequent military intelligence, and thousands of families are looking forward to the news of victory.