Yang Yan found a letter in his mailbox - a letter with no sender or recipient.
I opened it with doubts, and suddenly realized it after reading the beginning.
This letter is actually a love letter, or a love letter sent to the wrong address.
…
A story triggered by a love letter, a trivial campus chronicle, do you have the patience to read it slowly?
(The copywriter is incompetent, hiding his face and running around)