What does the word "don't laugh" once express the author's sincere feelings?

the word "don't laugh" expresses the poet's appreciation for the simple folk customs in the countryside.

The first couplet presents a quiet and joyful atmosphere in the countryside in the harvest year. Waxed wine refers to rice wine brewed in the twelfth lunar month of last year. Dolphin, it's a pig. Full of chickens and dolphins means full of chickens and dolphins. These two sentences mean that although the taste of peasant wine is thin, the hospitality is very deep. A word "foot" expresses all the hospitality of farmers. The word "don't laugh" expresses the poet's appreciation for the simple folk customs in rural areas.

I copied and pasted the above, and the following is my own understanding.

When reading the first sentence of this poem, I feel that images can appear in my mind. A person is holding a bowl of wine brewed in the twelfth lunar month, laughing and shaking his head, thinking, don't laugh at this wine, it's a strong nostalgia. The author must have been moved by the simple nostalgia at that time.