When physicist Shen Zhao was sorting through the belongings of his late mentor Chen Yanqiu, he found a work permit from 1995 with a mysterious message about the nonlinear flow of time written on the back. Later, she accidentally traveled to 1995 and met young Chen Yanqiu. The two gradually discovered that each other was a time traveler from the future. As the investigation deepens, they uncover a conspiracy involving Soviet scientists, secret experiments, and space-time closures. Through delicate description and compact plot, the novel explores the eternal themes of fate, memory and love, and finally ends with breaking the closed loop of time and rewriting the tragic ending, leaving a profound aftertaste.
