She loved him based on probability calculation, 0.37 Raised to the seventh power, so low that it was impossible, so it was fate, or her own compulsion.
He used observation to avoid loving him. Wandering in three cities, he learned not to become anyone's frame of reference.
They recorded each other on the third floor of the library, from complete names to radicals to dots, like two asymptotes that are infinitely close but never intersect. She stopped writing on page 237, and the second half of the sentence "if——" was soaked with water; he hid the agreement on the back of page 236, waiting for him to discover it himself.
Ten years later, he learned to write radicals and finally understood her language. The price is that she is no longer in his world.
[Reading Tips]
Before the campus and then the city, the time span spans ten years
Neither the male nor female protagonists have perfect personalities, and excessive rationality leads to mistakes.
The ending is non-traditional HE and is an "expired romance"
Contains mathematical/physical metaphors and requires some reading patience.
Intention: We have exhausted our calculations to get closer to each other, but before arriving, we have learned to coexist with regrets - those unfinished, expired, and suspended things will eventually be eternal in another form.