share time: 2026-02-24 12:34:01
Lin Wan, a single mother, has worked as an anonymous janitor at a technical university for ten years to save money for her daughter Xiaotang, who has congenital heart disease. One day, while cleaning a classroom, she casually solves a variant of Hilbert's Tenth Problem that has stumped academia for three years—catching the attention of Zhou Ming, a returning math luminary and her former PhD advisor! Just then, debt collectors storm the school to kidnap Xiaotang. To protect her daughter, Lin Wan is forced to reveal her past: she was once Zhou's most promising student, expelled a decade ago for taking the blame for his research accident, and the solution is her unfinished work from back then. When Zhou learns the truth and sees Lin Wan fighting for her daughter, he suddenly kneels before her...
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