Zhou Yan's math teacher, also referred to as Teacher Sun. She works at an elite academy known for its strong faculty and superior benefits compared to public schools. She secured a household registration through her job and now plans to buy a home since she won't receive a housing allocation for at least another ten years. She is described as a top student and a genius with an impressive resume. She doesn't have many friends and isn't very knowledgeable about clothes. She and Jiang Jinjin became close friends after adding each other on WeChat at a parent-teacher meeting, eventually going shopping and apartment-hunting together. She is interested in the trading seminar that Zhou Mingfeng invited Jiang Jinjin to attend.
