Han Yu's Poems: How does Liu Hua express the author's thoughts and feelings?

The first two sentences of this poem are about scenery, while the last two sentences are lyrical. The author does not directly write about the scenery, but sets off colorful pomegranate flowers from the side through people's feelings. But no matter how beautiful the flowers are, they are not lonely or silent. The poet lamented that no one came to see the flowers, saying that his friends were full of talents, but they were relegated to the hinterland by the ruler and could not be put into use. The word "upside down" strongly criticized the rulers' ignorance of talents and the resentment of both poets and writers.