The fragrance of birds and flowers in Penglai Fairy Mountain is a metaphor, which is often used to describe the beautiful and pleasant environment and atmosphere. Penglai Fairy Mountain is a fairyland in China mythology. It is considered as the place where immortals live, symbolizing beauty and mystery. Birds and flowers represent harmonious natural sounds and fragrant flowers, giving people a sense of tranquility and pleasure. Therefore, the birds and flowers in Penglai Fairy Mountain are often used to describe a scene or environment with pleasant scenery, quiet atmosphere and poetic flavor. This word often appears in literary works, poems and descriptions of natural scenery to express beautiful and dreamy artistic conception.