1. metaphor: illustrate the characteristics of one thing by comparing two different but similar things.
2. Analogy: Explain the characteristics of one thing by comparing two different things.
3. parallelism: emphasize the importance of one thing by repeatedly using the same grammatical structure.
4. Exaggeration: To attract readers' attention by exaggerating the characteristics or effects of a thing.
5. rhetorical question: ask a question to arouse the reader's thinking and * * *.