What does it mean that an old friend laughs more than a tree in the yard?

My old friends and friends are like trees in this yard. The autumn wind blows day after day, the leaves on the trees are less and less day by day, and my old friends are gradually leaving.

This bureau is from the poem "Close the door without looking at the picture" by Qing Jinnong, which is as follows:

Wan Fan's clothes are gone, so he doesn't read books.

Old friends laugh more than a tree in the courtyard, and the autumn wind is getting sparse.

Full text appreciation:

There is a thatched cottage. One person sits in the house, and the single room is quiet. There is an old tree behind the house, vigorous and old, with sparse branches and leaves, and there are several thin bamboos beside the house. What is even more rare is that it is simple to use a pen. It takes advantage of the situation to depict lonely characters. The lonely image expresses the author's sadness about the passage of time and the absence of his old friend.

Extended data:

Jinnong is the core figure of Yangzhou Eight Eccentrics. He is a master of poetry, calligraphy, painting, printing, piano music, appreciation and collection. Jin Nong studied calligraphy since he was a child, and his literary attainments were very high. Strong academic education made him the first of the "Eight Eccentrics in Yangzhou".

However, Jin Nong's nature is weak, his characters are grotesque and exaggerated, his brushwork is concise in Gu Zhuo, and his image is distinct and prominent; Unique landscape composition, casual writing and dyeing, simple and sparse; Its plum and bamboo pens are strange, simple and heavy.

The style of the work is regular, the brushwork is thick and simple, the pen is closed before delivery, the structure is compact, the trend is more introverted, and there are fewer extended gestures, which has a concise and clear style. Jin Nong's calligraphy art is good at simplicity and richness.

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