Look at the picture. According to the content of the picture, there are ancient poems, mountains and clouds, and a person sitting under a tree seems to be playing the flute.

Hehehe, I really can't understand this picture. I can only guess. The answer to a topic like this should be a famous poem. So I guess it's Liangzhou, Wang Zhihuan's.

The Yellow River is getting farther and farther away, because it flows in the middle of the Yellow River, and Yumenguan is located on a lonely mountain. Why use the elegy of willow to complain about the delay of spring, old Yumenguan, a spring breeze is not blowing!