Everyone said that immortality was good, but she was the only one who said that immortality was a poison, a poison inflicted by time. She froze time and banished her to silently move forward in the years, experiencing the joys and sorrows in it, from hysteria to despair. The story is about twin flowers, Xu Yu and Chang Heng'er. Chang Heng'er is taken from Chang'e's alias, Chang'e. Legend has it that Chang'e achieved immortality and soared into the moon to guard the Guanghan Palace alone. Chang Heng'er was also poisoned by a kind of immortality. Every thousand years, she must find someone with the same destiny as her and perform a blood transfusion to avoid falling into a century-old sleep. In an instant, she was the person in this reincarnation who met Chang Heng'er and gathered with some unknown creatures in Qingchuan Pavilion to start her fantasy life.