Dreamland is a pure daughter country, and it is the foundation, master, origin and destination of children's true feelings in the fairy world. The police fairy is the goddess of love and beauty in A Dream of Red Mansions, equivalent to Venus, Cupid and Aphrodite in the west. The four fairy goddesses were ordered by the police to spread acacia for the sentient sons in the world. The spoony species can only descend to the world after being registered in the dreamland, and then return to the celestial world after being robbed. In addition, even Geng Qingfeng's Hard Rock, Ergong and all the myths in the book must be read by the police fairy before they can take effect. A Dream of Red Mansions elevated the dreamland to the highest heaven, held high the position of loving God and beauty, and contained the profound meaning of praising the true feelings of children.