In the youthful flower season, the bitter rainy season, and in the age of beauty and ignorance, it is always hard to escape a piece of pure love. Years later, when life is gradually swallowed up by the fast pace of modern cities, an inadvertent episode brings people back to that memory that does not involve deception, fame or fortune, but is just a memory of being willing to pay silently for a feeling in the heart that one cannot explain or explain.