What do you mean by "the old country flows from the east to the Weihe River"?

-Donglai. -It's an ornament. -Weishui. The poet stood on the tall building, filled with emotion. Pedestrians should stop asking about the past, because the history of the old country rolls east like Weihe River and never comes back.

Xu Hun's Night View of the West Tower of Xianyang City, the whole poem is as follows:

Climb high and miss the ancient oil for thousands of miles, but the willows in your eyes are like Jiangnan.

The red sunset is in the temple outside the temple, and the wind has not yet come, and the wind has already blown the buildings in Xianyang.

At dusk, birds fly in the garden, and in late autumn, cicadas chirp in the leafy trees.

Passers-by don't ask about the past, only the Weihe River flows eastward as always.

It is said that the poet is looking at the fence. It is likely that the red sun has gradually faded to Bo Xishan that day. I don't know how long it took, but suddenly I saw clouds rolling and clouds relaxing, and the dusk was boundless. In a short time, it was approaching the temple pavilion in the west. The cloud birthday falls, and in an instant, "heaven and earth are different colors", and the realm has changed, but then a cool breeze blows to the city, which suddenly makes the towers more empty and bare. Based on his own "life experience", the poet knows that the wind is the forerunner of rain, the wind is quiet and the rain is imminent. The scenery moves and the mood changes, captured in the story of "the clouds are sinking at the beginning, the rain is coming and the rain is falling, and the wind is full of buildings", which makes future generations immortal as if they were on a tower, between wind and rain.

"In the morning, the clouds began to sink, the rain was coming, and the wind was everywhere." Cloud, sun, rain and wind are four same-sex "vulgar" words used together in one place, and the relationship between them is so clear, so natural and so flowing, but it is quite complicated. At sunset in Yun Qi, it was stormy. On the basis of the "fact lesson", it is promoted layer by layer, orderly, and naturally shows people the "forced situation", so that people in it must make their own choices: wait and see, head-on or retreat? "Rain is coming, and the wind is full of buildings" is such an artistic conception, which is often used by later generations as a harbinger of the urgency of political struggle or the eve of unexpected events.