The most prosperous place is the busiest, but the people standing in the distance and secretly staring at this place are the loneliest. Their helplessness is not understood by the noise here, and they cannot get any relief. So they have to hide their vulnerability. If they want to integrate into the bustling city, they must learn to digest weakness and helplessness. Only strong arms can support them to gain a foothold here.
Concept: Some reunions are to continue the story, while some reunions are just to bring the story to an end.