I heard a saying that the implicit hint in the sentence "summer is over" is that "youth's love ends without a problem." But for Baiyou, the end of this year's summer means that she is one step closer to Xu Xinhang.
When they first met in high school, Bai You described it as "having sex with someone". The ignorant feelings they had when they were young made both of them fondly remember them.
Later, Bai You resolutely chose the police academy, while Xu Xinhang chose to study medicine, just to protect her.
When Xu Xinhang saw Baiyou hand in hand with others, although he didn't know the hidden meaning, he chose to believe her and wait for her.
We will meet again, it's just a matter of time. Fortunately, I only like you from beginning to end, and you do the same, so I will never forget you and there will be a response.
Intention: Born from the harmony of causes and conditions, if you never forget it, there will be an echo.