Cross the Window Together

It's a simple schoolmate fanfic. The protagonists are Zhong Bai's childhood sweetheart, Lu Qiaochuan and Ren Yifan's best friends. They are people who originally existed in this world. They are not people who have traveled through time. They are not time travel stories, pretentious stories, systematic stories, or slap-in-the-face stories, but real fan fiction. Please don't comment if you don't like it. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.