This sentence comes from the inscription of Peony Pavilion written by Tang Xianzu in Ming Dynasty. The original text is "I don't know what the situation is, but if it goes on like this, the living can die and the dead can live." People who are born but can't be born and die, and those who die and can't be resurrected, are not affectionate. The love in the dream, why not true, there are so many people in the world in the dream? "