Suddenly I woke up and found that I was in the Chinese language class of the first year of high school. I had experienced failure in the college entrance examination, not being good at my major, being unsatisfactory at work, and forgetting my first love. Was it all a dream? What would happen if none of this happened and the youth of Han Bingxue came back again? How to make up for a youth full of regrets? Lan Xiaoran, are we so close to each other, or so close to each other?