Cosine and Dawn Angle

Xu Yan's life has a fixed routine: classroom, library, dormitory. As an ordinary college student, he is accustomed to using silence and distance to maintain his orderly world. The biggest disturbance is just his ranking in the next programming competition. On an ordinary Saturday, he was dragged by his chatty best friend to attend an event in a high school. He planned to waste time in the corner, complete the task and leave. Until the question period, the girl who had been sitting quietly in the back row reading a book raised her hand. Her question was not about college life or professional prospects like other students, but pointed to a nearly ignored technical detail in what he shared. The questions are precise and knowledgeable. Her name is Su Xiao. In that classroom filled with chalk dust and sunshine, everything around me seemed to be silent for an instant. Xu Yan raised his eyes for the first time and looked at the questioner seriously. For the first time in his regular world, an "unexpected variable" appeared that he could not simply classify or ignore. In this calm afternoon, like a stone thrown into the lake, the ripples slowly spread out. The life trajectories of two young people who seemed to live in parallel worlds began to quietly change after an accidental encounter.