The adopted younger sister of Song Yiqiu. She appears sweet, humble, and pitiful on the surface but is actually cunning, vicious, and scheming. In her past life, she drugged Song Yiqiu's wine with an aphrodisiac hidden in her long fingernail, framed her for having an affair with a stable hand, and turned the family against her. She continues her plots in this life, attempting to drug Song Yiqiu's wine a second time right in front of the Crown Prince. She is skilled at feigning grievance and manipulating others' perceptions.