**Synopsis of Theorem of Delayed Heartbeats**
When the chatty underachiever Yu Shu meets the quiet, reserved top student Jiang Ci, she thinks her secret crush is doomed to go nowhere. On the day she changes classes, she secretly slips a rabbit-shaped eraser into the gap in his desk, putting an end to her grand, unrequited love.
But that night, a message pops up in the chat window he had never once started: “Do you still want the physics notes?”
She replies in a huff: “No.”
After a brief silence, he sends her a photo. It is the very eraser, resting quietly in his palm.
“What about this, then? You left it behind. Do you want it back?”
From that day on, their two worlds begin to quietly converge. The slanting afternoon sun in the library, chance meetings at the used bookstore, late-night voice calls... Every feeling they cannot put into words is hidden in the math problems he explains to her.
At the end of senior year, he stands outside the humanities classroom, holding the eraser, the tips of his ears red.
“Yu Shu, I think I left something behind too.”
“What?”
“My heart.”
This is a warm story about a top student and an underachiever, from deskmates to lovers, from youthful innocence to maturity. The theorem may be delayed, but the heart never misses its moment.
