2. The four rhymes of Homesickness are parallel structure, with repeated chapters and chants; "National color wine" is a comparative structure, with sharp contrast.
3. The four images all have homesickness, but the difference is touch, taste and smell, focusing on color, fragrance and taste.
The moon is a picture with the same circle as the moon, and the other is a scene where things are different. The joyful scene of the former sets off the desolate feeling of the latter, which has a strong contrast effect and shocking artistic appeal. (That's right)
Homesickness can last forever.
6. Example: I prefer the four rhymes of Homesickness, which have the beauty of classical poetry and four beautiful images.