Looking for an appreciation of the artistic form (such as structure) of Lu You's "Wine"

Vigorous, unlike Lao Du, the beginning is so grand, but the ending often converges, turning from confusion to sadness. This is a matter of personality. The first couplet breaks the topic

Go straight to the point, simply and happily. Later generations said that if you drink wine and read Li Sao, you can be called a famous scholar, but it is not worth laughing at when it comes to Lu You. The second couplet in the middle first turns around

I am glad that this body is still there. Not only is it still there, but I can also hold crabs and wine. The second couplet has two negative sentences to strengthen the preceding couplet.

The combination of the four sentences is very strange

It does not form a complete and independent meaning like most rhythmic poems, but it is used as a foreshadowing to lead to the final couplet: The weather cannot stand the cold,