Su Nian grows up in a working-class family. Her father once ran with street gangs, while her mother loves playing mahjong, and the sound of mahjong tiles fills their home year-round. Despite having no access to quality educational resources, she studies diligently in the noisy environment, relying on her extraordinary talent and remarkable self-discipline. Since middle school, she has repeatedly excelled in competitions, advancing through provincial and national contests before winning a perfect-score gold medal at the International Mathematical Olympiad at the age of fifteen. Faced with prejudice and bullying because of her family background, she silences her critics with her achievements. At sixteen, she earns admission to Tsinghua University for an integrated bachelor's, master's, and doctoral program. She heads to the Tsinghua campus, where she reunites with her kindred rival, Gu Yan, and begins a brand-new chapter of her life.