1． What expression techniques does the poem use as a whole? Name the advantages of using this technique.
The expression technique from point to surface is used: clear dew---sparse tung trees---sound far away---autumn wind. This expression technique, which gradually unfolds from point to surface, better stimulates people's associations.
2. In what ways does the author describe the characteristics of cicadas? Point out the corresponding verses and briefly analyze them.
The author describes the characteristics of cicadas through two sentences: "hanging down to drink the clear dew" and "living loudly and keeping a distance". At the same time, it also hints at the poet's noble and far-sighted character and interests, and the mutual interpretation of things and myself. The deeper meaning of chanting things is to chant people.
3. What does the author tell us through this poem?
This is a poem about objects written by Yu Shinan, a famous official in the early Tang Dynasty. The poem about objects is full of sustenance and has a strong symbolic character. The deep meaning of their metaphors is nothing more than that as an official or a human being, you should stand on high ground and be virtuous, so that you can speak loudly and be famous far and wide. This kind of high and far-reaching power comes entirely from the power of personality and beauty, and cannot be obtained by relying on the wind, or by having power, connections and support. It implies the poet's noble character and aspirations.