In literary works," Bluebird " usually represented hope, happiness, freedom, and so on. In many classical literature works, the blue bird was regarded as a signal to convey the sun and warmth, a symbol of connecting man and God. For example, in the Harry Potter series of novels, the connection between Harry Potter and the bluebird Millie was a symbol of his connection with mysterious powers. In poetry, bluebirds were often used to express hope and good wishes. For example, the famous line in the Tang Dynasty poet Li Bai's "Wine to Drink","Life must be full of joy, don't let the golden cup empty to the moon." I'm born with talent, I'm sure it'll be useful. To cook sheep and slaughter cattle for fun, you must drink three hundred cups at a time." The " bluebird " in the book was a symbol of hope and wishes. In literary works, the blue bird represented hope, happiness, freedom, and other meanings. It was a symbol that connected man and God, man and himself.