This song describes the scene of a tryst with a lover in a dream and a feeling of loss after waking up, showing the deep longing for the lover. The author's conception is very special. He describes the quiet, beautiful and lonely scenery in the dream in detail and vividly. The music describes dreams, hallucinations, confusion, and the interplay of virtuality and reality. In fact, only by reading the full text can we understand the meaning of this sentence more deeply. The moonlight dream dimly shines on the screen window, which is a contrast to the "dream" and contains the loneliness of the poet sleeping alone. It was impossible to dream again, but he persisted in pursuing the shadow of his past. Being able to realize your wish in the misty hallucination is not only like seeing the person, but also like hearing the sound.