The Gu family's legitimate eldest daughter and Gu Zhulan's older sister. She is quite beautiful but lacks Gu Zhulan's flamboyance. The Third Prince prefers Gu Zhulan over her, which adds to her humiliation. She often vents her frustrations on Gu Zhulan. She barged into the room accusing Gu Zhulan of disgraceful behavior and slapped Gu Nanxian when she saw him hiding behind Su Baiyue with half his face covered by red cloth.
