Qiao Mingfei, also called Sister Fei, is the nanny who raised Yan Jingheng when his parents were abroad. She is ten years older than him and is now a widow whose husband died the previous month. She moved into Jiahe Jingting with her daughter Qiao Shiyue. She is portrayed as humble and self-deprecating, often placing herself in a lowly position to guilt others. She has a close, familiar relationship with Yan Jingheng, who allows her to call him by name instead of 'Sir.'