Lu Liu's mother, a middle-aged woman who is warm, approachable, and easy to get along with. She is a teacher who once had a student sleep only three to four hours a day and end up in the hospital from mental exhaustion. She is caring and encouraging, urging Lu Liu to give Lin Zhi a ride home. She playfully teases her son about not deleting Lin Zhi from his contacts again and is pleased when Lin Zhi praises Lu Liu.