The poem of the wise man can help me to explain the spiritual meaning?

, melancholy feelings. The fusion of emotional expression and image choice makes the whole poem far-reaching in artistic conception. The apt natural metaphor and concise and beautiful language make the whole poem very helpful to interpret such a poem. After parting/homesickness is a tree without rings/Never grow old (section 3) The last section of the poem condenses "homesickness" into a tree.