The scratch paper in math class is filled with unsolved steps and hidden thoughts that I dare not express. Zhou Yubai avoided the gaze of his deskmate Lu Zhiheng and his uncontrollable heartbeat, but he could not avoid the other person's calm tenderness. A stuck math question, a probing question, and the secret love hidden in the lines of the scratch paper finally have an answer that goes both ways. It turns out that his dodge and panic were never a one-man show.
Intention: The heartbeat in youth is never an unsolvable problem. Those careful dodges and temptations will eventually find gentle answers in the two-way rush. The work uses mathematics questions as clues to explore the self-pulling and brave honesty in secret love. It expresses the core idea that sincere response is the best antidote for young people's worries, and that two-way emotions in youth are the most precious.