Two-way secret love, separated by life and death.
He dropped out of school and went to Hangzhou, while she fell ill and hid his affection.
When he returned, she had already slept in the spring of her seventeenth year.
And he finally held someone else's hand, leaving only endless regrets for the rest of his life.
Concept: Some people like you, but even their breathing will be ignored by the other person. Although the ending of the story is regrettable, it reminds us to cherish the people in front of us and express love bravely.