How to understand the suggestibility of poetry

Is the landlord asking about poetry rather than the suggestibility of words? First of all, we should know what kind of situation the person who wrote this poem is in, whether he is high-spirited, full of complaints, depressed, full of lofty sentiments or sad tears, what is the purpose of his writing this poem, whether he is pinning his homesickness or feeling something. Knowing this, you can easily understand the meaning of a poem.