Jiu's Strange Circle tells the story of little Jiu'er's life and emotions. People may always feel that they are special at some point. This is a sad emotion for Ding Jiu. What he has is never complete enough, and in the end he will be the only one left. However, he is indeed different from others because he is an optimistic pessimist who sticks to his circle and the things he cherishes in his circle.
Xu Yi didn't know who he was, but he walked into Jiu's sight on a gentle but not very bright afternoon.
If you love, don't give up easily.