At the beginning of the story, Fang Jiaying, who is about to turn 30, is forced to embark on this happy adventure of "being alone". At the end of the story, Jiaying has experienced a year of "being alone → being with someone → being alone again". She finally understands that she still needs love, friends and family, but all of them will not be with you all the time and as a matter of course. One day they will not be by your side. Facing such a reality, when you need warmth and help the most, you have to make "yourself" the best spare tire. "Learn not to be alone, and don't let yourself be lonely. Those are emotions caused by lack."