The two met and stayed together, and Xu Qingyi felt that it was fate that brought them together, like two drops of rain falling on the same window, each falling along a different trajectory, but leaving similar, winding tear tracks on the glass.
Later, he left this world first. Xu Qingyi was not hysterical, she just sat in front of the window for a long time, watching the sunlight evaporate the water marks on the glass little by little. She finally understood that they were two independent drops of water that resonated briefly because of a common storm. Now he has turned into a cloud, and she still has to stay on the ground, carrying his incomplete trajectory through the rest of the sunny day alone.
Intention: True fate may not be "growing old together" in the secular sense, but profoundly changing the life trajectory of another person in a limited life. Although Jiang Chaosheng stayed in that year forever, he planted his expectations for the future and desire for knowledge into Xu Qingyi's life through those "long-planned" companionships.
Every step Xu Qingyi took and every scenery he saw were the continuation of Jiang Chaosheng's life. Death ends their "being together" but cannot end their "connection". She lived as his eyes, seeing all the tides and ripples in the world for him.