Its use is mainly reflected in the last two sentences, "If the peony blooms early, who will come to see the plum blossoms in the snow?" .
What the poet wants to praise is plum blossom, which can be seen from the title of the poem and the first two sentences, which describe the shape of plum blossom in detail. A flower is used to show off the back. "If peonies can blossom earlier, who will pay attention to plum blossoms in the snow?" Praise the quality of plum blossom that is not afraid of cold, and also reflect its dignity.
Can you understand this?