This novel is written for my ex-boyfriend, a boy who loves mathematics.
When we were together in the past, he always blamed me for not being obvious about my love. I knew a little about writing skills, but I never used them on him, and I never even wrote a decent love diary for him. Now that we have broken up, I am finally willing to write a novel based on the two of us.
The title of the novel came to me at random. One summer evening, he handed me a love letter. The Cartesian heart-shaped function on the love letter made me remember it for many years.
In reality, we are separated for some reasons, but I am willing to create a time and space where Ji Rusi and Xu Zhiwei can be together forever to make up for our regrets.
Intention: Meeting you is enough to make me lucky for a lifetime