It means: Qinghai Lake is covered with dark clouds, covering the continuous snow-capped mountains. Yumen, the ancient city of frontier fortress, is a grand pass, thousands of miles away, facing each other from afar. The soldiers on the border have been through many battles, their armor is worn out and their ambitions are immortal. They will never return to their hometown before defeating the invading enemy.

Source: Joining the Army-Tang Dynasty: Wang Changling

There is a dark snow-capped mountain in Qinghai, with long white clouds and a lonely city looking at Yumenguan.

Yellow sand wears golden armor in hundreds of battles, but the loulan is not returned.

Extended data

1, the creative background of Joining the Army

Joining the army is a group of poems by Wang Changling, a poet in the Tang Dynasty. The whole poem is desolate and generous, which fully shows the atmosphere of the prosperous Tang Dynasty.

2. Appreciation of Joining the Army

There are dark snow-capped mountains in Qinghai, and the lonely city looks at Yumenguan. At the beginning, the poet painted a magnificent and desolate frontier fortress scenery, which summarized the face of the northwest frontier fortress. In the Tang Dynasty, there were Tubo in the west and Turkic in the north. At that time, Qinghai was the place where Tang Jun and Tubo fought many times, and outside Yumenguan was the sphere of influence of the Turks, so these two cities were important frontier cities in the Tang Dynasty.

Looking at Qinghai and Yumenguan reminds the soldiers of the fighting scenes that happened in these two places, and they can't help but have a boiling passion. It can be seen that these two sentences contain rich feelings, such as the attention of the soldiers on the frontier, the pride of being able to shoulder the heavy responsibility of defending the country, the loneliness of the harsh environment in the frontier, and the longing for the hard life of the generals on the frontier. All kinds of feelings are integrated into this desolate and vast, confused and dim scene.