What rhetorical devices are used in the third paragraph of the second part of Dujiangyan?

The article uses the method of comparison for many times, and compares Dujiangyan with the Great Wall at the beginning, and draws the conclusion that Dujiangyan, which has permanently irrigated the Chinese nation, is even greater, although the Great Wall is great. The country mother is compared to Dujiangyan, and the marathon runners who have climbed over various obstacles are compared to the Dujiangyan water that has suffered enough and has made a splash. The use of these metaphors makes the article vivid.

Dujiangyan, located in the west of Dujiangyan City, Chengdu, Sichuan Province, is located on the Minjiang River in the west of Chengdu Plain.