Compare the deep water of thousands of feet in Taohuatan to the farewell friendship of friend Wang Lun.
Thousands of feet also used exaggerated rhetoric here.
The rhetorical method used in the two poems "Peach Blossom Pond is deeper than thousands of feet, but not as good as Wang Lun's" is metaphor. The ontology of metaphor is "Love from Wang Lun", and the metaphor is "Peach Blossom Pond" in thousands of feet. Ontology and metaphor have the same feature-depth. In order to highlight the "depth" of ontology, the degree of metaphor is particularly emphasized.
These two poems are somewhat exaggerated, but the rhetorical methods used are not exaggerated. The use of exaggeration and metaphor has different purposes and rhetorical effects. The use of exaggeration is to highlight the characteristics of things and deepen the impression of readers. Metaphor is used to make readers feel metaphorical things more vividly and truly. The feeling of Wang Lun's farewell to Li Bai in the poem is an abstract concept, while the deep Peach Blossom Pond in thousands of feet is a concrete thing. Compared with the former, the latter can make the language vivid and make the readers more deeply infected, which fully conforms to the characteristics of metaphor. So the rhetorical method used in these two poems is metaphor. Although there are exaggerated colors in the poem, Wang Lun's feeling of seeing Li Bai off is compared to the deep peach blossom pond in thousands of feet.