What is the sense of unity in this poem?

You are asking about The Feeling of Unity written by Nie Luda. Unified description of a gravel belongs to the whole desert, a drop of seawater belongs to the whole ocean, all leaves are different, and there are pictures of flowers everywhere. By describing the identity of flowers and trees in nature, we can infer that there is unity in opposites, glimpse the single essence through various phenomena, and express the author's yearning and pursuit of world peace and unity.