Xia Xi and Chen Shu cherished each other during their postgraduate lives, and fell in love with each other for a long time, but in the end they tacitly remained silent. The suppressed love affair between him and her was just a momentary fireworks in the long river of time. There is no banquet in the world that never lasts, and all memories, friendships, joys and sorrows will eventually disperse into mist and rain, disappearing in the flow of time without any trace.