What does it mean that the Yellow River is far above the white clouds?

Extend, there is no end of the Yellow River in sight.

Why should a strong brother complain about willow? The spring breeze does not pass through Yumen Pass.

The Yellow River flowing far away seems to be connected with white clouds, and Yumenguan stands alone in the mountains, looking lonely and cold. Why do you want to complain about the delay of spring by playing the sad willow song "Folding Willow" with Qiangdi? It turns out that the spring breeze around Yumenguan can't blow.