Transfer student Lin Xin accidentally discovered that he could pass through the school's abandoned old bell tower and connect with Shao Yi, a student from the same school three years ago in parallel time and space. The two gradually learned about each other's lives by leaving letters and objects in the bell tower to convey information. In reality, Lin Xin is lonely due to frequent family relocations, while Shao Yi is left out by relatives due to the early death of his parents. In exchanges across time and space, they comforted each other, but found that there was a subtle connection between the two time and space - Shao Yi's experience seemed to be affecting Lin Xin's current life direction, and Lin Xin could also change Shao Yi's past. When they tried to meet, they discovered that the overlap of time and space may have irreversible consequences.
Purpose: To prevent more people from being troubled by the lack of good books