From what angle does the poem "Yellow" mainly describe the Yellow River?

The author describes the Yellow River from three aspects: "seeing", "praising" and "learning", and writes about the geographical strategic significance of natural disasters in the Yellow River and its great and strong spirit. The description of the three aspects is progressive.

The first floor says "Looking at the Yellow River". There are both realistic parts and magnificent imagination. Highlighted the image of the Yellow River. On the second floor, write "Yellow River Fu". First, praise the great contribution of the Yellow River to the Chinese nation, then praise the Yellow River as a barrier for our nation, and finally praise the Yellow River as a sentient being and inspire the Chinese nation. On the third floor, it says "Learn from the Yellow River". This is the end of the poem. On behalf of the people of China, the poet made an oath to learn the spirit of the Yellow River.

Pay attention to depicting the imposing beauty of the image of the Yellow River. In the poem, "the Yellow River is rolling" and "the waves are rough, causing great waves; Turbid flow turns around, forming a nine-curve chain "and other sentences, and a magnificent picture is unfolded in front of readers! You can hear the rushing power of the Yellow River.

The sentence "Stretching out a thousand iron arms to the north and south banks" compares the Yellow River to a giant. The main stream of the Yellow River is the trunk of the giant, and countless tributaries of the Yellow River Basin are thousands of iron arms on the giant and "pour down", which embodies majestic and unstoppable tolerance and strength, which is enough to inspire the national spirit and belief.