Investment value analysis:

A colleague's older sister, born in 1988, is 38 years old, holds a PhD, and is an associate professor. She owns a house with a mortgage. Disadvantages: she has a younger brother, her parents are from the lower social strata with no retirement plan. Her annual take-home pay is 180,000 yuan. She used to be extremely picky.

Recently, she met a man, born in 1993, with a master's degree, working as an administrative teacher at a Party school. He has a master's in law. He's an only child from the city, with parents working within the system. She was very proactive and invited him out for a meal. The man didn't go. Why?

The man said: During his master's studies, he dated an undergraduate junior, a girl born in 2001. The 2001-born girl's mother was born in 1980.