What season is there a deep tree oriole singing by the lonely grass stream?

In spring, according to the search results provided, the poem "I pity the grass stream alone, and there are deep trees singing" depicts the scene of spring. This poem comes from Xixi Chuzhou written by Wei, a poet in the Tang Dynasty. It expresses the poet's love for the spring scenery, especially for the faint weeds growing by the stream and the orioles singing tactfully in the depths of the forest. This poem conveys the poet's calm mind and appreciation of natural scenery by comparing the grass and the oriole. I only like the weeds that grow in the valley by the stream, and the orioles that sing softly in the depths of the Woods. Note: I only like it. Excellent grass: grass in the valley. Health: a "line". Deep tree: a tree with dense branches and leaves. I really appreciate this sentence, which describes the scene of late spring. From the two aspects of vision and hearing, the elegant scenery of green grass and Oriole's singing was written, which shaped a quiet and cold realm.