Jiang Tong fell in love with Gu Shen from a math problem.
She will always remember the way he took her scratch paper - the pen tip was very fast and the handwriting was very light, as if he was doing something ordinary.
And he also liked her, but from earlier.
It was too early for her to notice him, too early for him to learn to be serious.
In the last class of his senior year in high school, he filled up the English paper he had not handed in for three years.
Not because of a sudden enlightenment.
It's because she said: "If you take it seriously, you will be very powerful."
He wanted her to see the "awesome" version of himself.
Later, he held her hand in the graduation sunset:
"It only takes half an hour to get from University A to University F by bus."
"I don't want to be separated from you."
Purpose: Love grows over time