Lin Xin'er's tenant, a Ph.D. graduate from a top domestic university who works at a research institute. She is described as a perfect tenant—single female with a legitimate stable job and no bad habits. She rarely comes home and never interferes in Lin Xin'er's affairs. Her only rule is that Lin Xin'er is never allowed to enter her room. When asked about her research, she cryptically replied it is a state secret. Lin Xin'er always wondered why someone like Ji Ting, a national elite, would need to rent a place.
