Function:
From the seventh sentence to the end, they are all about sound effects. First, I will write about what is close at hand. The air-conditioned light in front of the twelve city gates of Chang'an is all melted away by the sound of the bells and whistles. In fact, the cold air and light cannot be melted away, because Li Ping played the harp very well, and people were so intoxicated by his beautiful string singing that they could not even feel the cold wind and dew in late autumn. Although the wording is romantic and exaggerated, it expresses a true feeling. "Purple Emperor" is a pun, referring to both the Emperor of Heaven and the emperor at that time. The poet does not use "King" but "Purple Emperor", which is not only a pursuit of novelty in word choice and sentence construction, but also a clever transition technique, connecting the previous and the next, and naturally expanding the artistic conception of the poem from the human world to the immortal world. In the following six sentences, the poet flies to heaven and the sacred mountain with the wings of imagination, bringing readers into a broader, deeper, magical and magnificent realm. "Where Nuwa refines stones to mend the sky, the rocks shatter the sky and make the autumn rain fall." The music spread to the sky. Nuwa, who was mending the sky, was so fascinated by the music that she forgot her duty. As a result, the earth was shattered and the autumn rain poured down. This kind of imagination is so bold and extraordinary, unexpected and touching. The word "funny" closely links the powerful charm of music with the above-mentioned wonderful sights. Moreover, the scenes of earth-shattering and autumn rain can also be regarded as manifestations of musical images.
In the fifth couplet, the poet describes from heaven to the sacred mountain. The wonderful music was transmitted to the sacred mountain, and the goddesses were deeply moved by it; the music was so touching that it made "the old fish dance on the waves and the skinny dragon dances." The poet uses the two words "old" and "thin" to modify the fish and dragon, which seem to be flat and dry, but have completely opposite artistic effects, making the musical image fuller. The old fish and the thin dragon were originally weak and had difficulty moving, but they actually jumped and danced along with the melody of the music. This unexpected image description made the invisible and beautiful sound of the harp sound appear in front of the readers like a relief.
The above eight sentences use form to write sound, and most of them are moving objects. They come together, are novel and magnificent, and are dizzying. The last two sentences use still life for further contrast: Wu Gang, who was exhausted from cutting osmanthus all day long, stood there for a long time, forgetting to sleep; the Jade Rabbit crouched aside, letting the late night dew keep falling. The sweater on his body was soaked and he refused to leave. These beautiful images full of thoughts and feelings are deeply imprinted in the hearts of readers, just like the bright moon projected on the water, appearing deep and distant, intriguing and thought-provoking.
The biggest feature of poetry is its unique imagination, vivid images and full of romanticism. The poet is committed to transforming his abstract feelings, emotions and thoughts about the sound of the harp into concrete objects through association, making them visible and perceptible. The poem does not directly judge Li Ping's skills, nor does it directly describe the poet's self-feeling. Some of it is just a description of the music and its effects. However, throughout the whole article, the poet's emotions are expressed everywhere, and he expresses his feelings and evaluation of the music in a tortuous and clear way. This integrates external objects and internal emotions, forming an artistic realm that is pleasing to the eye and mind.