Qiao Ran, a second-year Ph. D. Lecturer in the Chinese Department, ended his career as a substitute teacher in order to pursue a Ph. D., But unexpectedly met Su Yuanchen, a young man who had left without saying goodbye three years ago during a school-enterprise cooperation project on digital textbooks. At that time, she was a young teacher who was temporarily helping out at the Institute of Science and Technology, and he was a senior computer science student who was submitting his thesis. There was a tacit ambiguity, but after he confessed his love, his parents forced him to go to a foreign country and ended without any problems. Three years later, she is the project leader, and he is the CTO of Tuojing Technology and the technical director of the partner. He was a pseudo-teacher and student in the past and is now Party A and Party B. The story begins with a reunion, a youthful encounter and gentle relationship in the campus, and a collision with the deliberate approach and resistance to temptation in the city. There was an unchanged heart hidden in his eyes, and an unspeakable grudge buried in her heart. There were no bloody misunderstandings, only straightforward honesty. During the day and night of cooperating on the project, the two solved the regrets of three years, crossed the boundaries of identity and time, and rushed to a tender stay that was unique to them.
