Originally named Bilian, a fifteen-year-old palace maid with a childlike face serving Wen Xiaotu. She was cheerful and loyal, only speaking freely in front of Cairen (Wen Xiaotu). Wen Xiaotu felt guilty about the original owner's impulsive naming and renamed her Bi Xin, meaning heartfelt and considerate. She accompanied Wen Xiaotu nervously to Yi Nian Hall.
