Gu Nanyin's half-sister, the illegitimate daughter whose mother was Concubine Yun. She played humble and submissive for years to deceive Gu Nanyin. She pushed Gu Nanyin into the freezing pond in winter, causing her to fall into a fever. She allied with the Crown Prince to capture Gu Nanyin and force the Regent to sacrifice himself. She harbored deep resentment about being an illegitimate daughter while Gu Nanyin was the legitimate mistress.
