This story is generally called "Zhuang Zhou become a butterfly". In the eyes of ordinary people, what a person sees and feels when he is awake is real, and dreams are all illusions and unreal. Zhuangzi doesn't think so. Although, waking is a realm, dreams are another realm, and the two are different; Zhuang Zhou is Zhuang Zhou, and butterflies are butterflies. They are different, too. But in Zhuang Zhou's view, they are just a phenomenon, a form and a stage in the Tao movement.
A simple story not only shows a dreamlike attitude towards life, but also reveals the metaphysical "Tao" and the metaphysical relationship between Zhuang Zhou and butterflies. Everything in matter, though ever-changing, is only the materialization of Tao. Zhuang Zhou and butterfly are essentially Tao, and there is no difference. This is the so-called "Wuqi".
Li Shangyin wrote in "Jinse": "I want to know why my Jinse has fifty strings, each with a youthful interval. Zhuang Mengdie, Wang Chunxin is crying. Mermaids shed pearl-like tears on the moon-green sea, and the blue fields breathed their jade to the sun. A moment that should last forever has come and gone before I know it. " Among them, "Zhuang Mengdie" is an allusion.