A piece of candy wrapper with Fibonacci sequence printed on it made Lin Yan, a top math student in Nancheng No. 1 Middle School, meet Jiang Yu, a potential stock who loves to save candy wrappers.
After dividing their subjects and becoming deskmates, they are each other's exclusive problem-solving keys: Lin Yan uses rigorous logic to dismantle abstract formulas, and Jiang Yu lights up the world of mathematics with the romance of life. From the disputes and reconciliations in high school competitions to the preparations for competitions in the university library, one candy wrapper after another connects the tacit understanding and thoughts, and also reveals the time-spanning competition agreement between two generations.
This is a story about youth, love and two-way running - the best time is the problems we have solved together, the candy wrappers we have saved, and the infinite future we have agreed upon.
