Why did Li Bai write such a poem as Looking at Lushan Waterfall?

Because "Looking at Lushan Waterfall" is one of Li Bai's famous landscape sentences, which has been passed down through the ages. It has two characteristics, the first is magnificent scene description, and the second is rich emotional expression.

In the aspect of scene description, poetry shows the majesty of Lushan Mountain, the great impact of waterfalls and the magnificent prospect, which makes the whole picture reach the balance of strength and beauty.

In emotional expression, the poet used simple and natural sentences, which were fluent and smooth, showing the poet's feelings and heroic spirit of praising great rivers and mountains.