A mysterious legend has been circulating in Hua'an City for hundreds of years. It is rumored that there is a Taoist temple with a gathering of immortals on Fengqing Mountain. There is an anonymous Taoist nun in this Taoist temple. This Taoist nun is very skilled in immortality but has the skin of a mortal. She is talented but ugly. Even so, this Taoist nun is very respected, just because she has mastered a magic. It is said that this magic uses the dreams of mortals as nourishment. The Taoist nun casts magic to absorb the dreams of mortals, and uses the depth of the dream to give the dreamer a wish. It is exactly the same as the tapir, the monster spread in foreign countries, except that the monster named tapir eats people's nightmares, while this Taoist nun eats people's dreams. Those who realize their wishes will lose their sweet sleep and be haunted by nightmares every night, but the wishes in exchange have never failed. Therefore, whether they are princes, nobles or common people, they are willing to give up their dreams as long as they have unfulfilled long-cherished wishes. However, this spell disappeared with the death of the Taoist nun a few years later, and no one used it anymore. Nowadays, the only name left for this spell is the floating dream order.