Mathematics genius Lin Chuxia signed a contract for money: pretending to be the girlfriend of school sweetheart Gu Yanshen, with a salary of 500 per hour and a deadline of three months.
He needs a shield and she needs living expenses. This should have been a simple arithmetic problem.
But she didn't know that he would carefully remember every sycamore leaf in her notes.
He also didn't know that her mathematical formula could reverse his basketball game.
When the contract expires, sycamore trees cover the campus.
He tore up the contract and said in a hoarse voice:
"We prove again - for the rest of our lives, we prove that I love you."
From early summer to deep love, from calculation to heartbeat.
This relationship that started with a transaction finally revealed the only answer called "forever".
