What do you mean it's dark?

Wang Zhihuan's poem "Liangzhou Ci" describing sandstorms in Tang Dynasty.

Yellow sand goes straight to white clouds,

Wan Ren is an isolated city.

Why should a strong brother complain about willow?

The spring breeze does not pass through Yumen Pass.

The Yellow River seems to rush out from the white clouds, and Yumenguan is hanging alone in the mountains. Why do soldiers complain that willows don't sprout and spring breeze can't blow outside Yumen Pass?

Viewed from the vertical direction, the Yellow River is drifting away, as if rushing among winding white clouds. In the mountains of Wan Ren in the upper reaches of the Yellow River, an isolated city, Yumenguan, stands tall and isolated. Why do you want to use Qiangdi to play sad willow songs to complain that spring has not come? It turns out that the spring breeze around Yumenguan can't blow!

It's getting dark _ Idiom Interpretation Pinyin: tiān hūn dàn

Interpretation: faint: dark. The world is dark and dreary. Describe the scene of wind and sand all over the sky when it is windy. It is also a metaphor for political corruption and social darkness.

Source: Tang Hanyu's poem "Dragon Move": "The sky is faint and the black dragon moves, and Lei Zhen is male and female."

Sandstorm is a general term for sandstorm and sandstorm. It refers to a severe sandstorm weather phenomenon in which strong winds blow and drag a large amount of sand and dust on the ground into the air, making the air particularly turbid and the horizontal visibility less than one kilometer. Among them, sandstorm refers to a sand-laden storm formed by strong winds blowing a large number of sand near the ground; Sandstorm is a storm formed by strong winds, which brings a lot of dust and other particles into the sky.