Poetry describing history

Castle peak can't cover up, after all, it flows east. This is a sentence from Bodhisattva Man, a poet of Jiaxuan. Its whole word is: Yugutai falls into Qingjiang River, pedestrians in the middle cry more, looking at Chang 'an in the northwest, and pitying countless mountains. Castle peak can't cover up, after all, the east flows, the river is sad at night, and the mountains are deep in the partridges. I like Qingshan's two sentences very much, not for anything else, just because he revealed an objective truth and broke a secret. Xin Qiji lived in the decadent Song Dynasty, determined to kill the enemy, but unable to return to heaven. Such a cruel experience gave him a thorough understanding of the world. The tide of history can be described as vast, surging eastward and unstoppable. Even if a few green hills make it turn a few corners, no one can change the general trend of going straight to the East China Sea.