Food delivery rider Ming Cheng and his first love, Yang Mengjiao, fall into a fissure in the earth and mysteriously return to their high school classroom, reborn. Yang Mengjiao has lost her memories of her previous life. Ming Cheng realizes that this rebirth conceals a deadly conspiracy and sets out alone to uncover the truth behind time's tampering.
The description is very decent and vividly shows the protagonist's color. It's a very good book.