What's the content of the whole poem "Thinking of your relatives more during the festive season"? Is this poem about the Mid-Autumn Festival?

Poem: In Tang Dynasty, Wang Wei's "Mountain Dwelling in Memory of Shandong Brothers".

I am a lonely stranger in a strange land, and I miss my family more often during the holidays.

When I think of my brothers' bodies climbing high, I will feel a little regret for not being able to reach me. ?

This poem is about the Double Ninth Festival on September 9th.

Significance: Being a guest alone in a foreign land, I miss my relatives twice every festive season. Imagine that I was the only one with dogwood on my head when my brothers climbed the mountain and looked far today.

Precautions:

1, September 9th: Double Ninth Festival. In ancient times, nine was the number of yang, so it was called Chongyang.

2, memory: nostalgia.

3. Being a stranger: Being a guest in another country.

4. Festival: a beautiful festival.

5. Climbing: In ancient times, there was the custom of climbing on the Double Ninth Festival.

6. Cornus officinalis (zhūyú): A kind of vanilla, namely cassia. In ancient times, people thought that wearing dogwood on the Double Ninth Festival could avoid disasters and ward off evil spirits.

This poem was written by Wang Wei when he was seventeen. Wang Wei was wandering between Luoyang and Chang 'an alone. He is from Zhou Pu (now Yongji, Shaanxi Province), and Zhou Pu is in the east of Huashan Mountain, so he called his hometown brothers Shandong brothers.

The first sentence of this poem describes the poet's loneliness in a foreign land. The words "independence" and "difference" show the poet's strong feeling of being a stranger in a foreign land. The lonelier he is outside, the more he misses his relatives in his hometown. In the festival representing reunion, I can't help but think of people and things in my hometown, the beautiful memories of poets such as mountains and water in my hometown, and write down many true feelings of wandering abroad, which is very representative.

In the last two sentences, the poet directly expressed his thoughts and turned to the scene of his reunion with his family, imagining how happy the two brothers were when they took Cornus officinalis to climb the mountain on the Double Ninth Festival. But what the poet thinks of is not only happiness, but that he didn't spend the holidays with his relatives in his hometown, so his relatives will also find that one person is missing when inserting dogwood, and the sentence is unnatural. It shows its profundity and novelty.