At the beginning of his second year of high school, Lin Yutang bumped into his new neighbor, the science genius Song Chengan, in the sweaty corridor. The sharp lines of the young man's shoulder blades were still etched in his eyes. The essay question "On Complementarity" in the first monthly exam of the school year left this academic god who had swept the competition helpless with the blank paper.
In full view of everyone, Song Chengan walked through half the classroom, pushed the manuscript paper with only the title in front of her, and said calmly: "Teacher Lin, teach me." Before the class teacher's ridicule could land, his fingertips ran across the comments she had written, and a deep voice sounded clearly:
**"Yeah, I'm studying."**
He raised his eyes and locked his gaze directly on her, who was number one in the grade.
**"Learn how to marry the first in your grade."**
A grape-flavored hard candy and a purple candy wrapper that was smoothed and folded into a star became the boy's silent treasure. The "law of candy wrapper substitution" proposed by the science genius turned this mutual assistance that began with "complementarity" into a sweet tug-of-war:
**"If you eat candy, you have to return the candy wrapper to me."**
**"Want a new one? You'll have to trade it for something else."**
From the desks next to each other to the track side by side, from ignorant childhood sweethearts to determined partners for the rest of their lives, Lin Yutang and Song Chengan used their top IQs to solve a problem called "Heartbeat". In this warm and sunny youth, they complement each other with knowledge and exchange with sincerity, and jointly write the perfect law from campus to wedding dress - it is about complementarity, about growth, and more about love. ** The rigorous logic of science will eventually lead to the most romantic answer.
