The first floor: describing the "grasshopper music" in midsummer; The second layer: "Cricket Song" describing the severe winter.
2. The transitional sentence is: "The poetry of the earth never stops."
At the end of the poem, the author skillfully uses association to superimpose the two pictures of "Kukuo" and "Kukuo", so that the "Kukuo Song" in winter echoes the "Kukuo Music" in midsummer and interweaves it in the poet's mind.
3. People should constantly pursue beautiful wishes and ideals.
4. The poet's sincere praise and love for nature.