S1, E4: Rendong is the daughter of the famous doctor Gu Feng . When Gu Feng accidentally drowns, the family blames his death on their butler, Fang Cheng .Feeling betrayed by the family he has loyally served, Fang Cheng decides to switch his illegitimate daughter, Gu Qianwei , with Rendong.Her life of privilege and comfort was stolen from her.