What style does Du Fu's "The Story of Climbing Yueyang Tower" reflect?

Style is naturally his realistic style, and poetry is so lonely, like a lonely boat.

First of all, the poet himself is in a lonely situation.

Secondly, after Li Bai's death, he was unique in poetry and felt lonely.

Standing on a tall building, he is like a king in poetry, and all the other mountains are short in the sky. ..