The childhood of Cheng Wushu and Cheng Taoqing
The birthday that represented joy turned out to be the beginning of tragedy. The mysterious disappearance of the elder brother and the foster care of the younger brother put a semicolon on their lives.
The foreshadowing of the first chapter of "Chess Game: Game", a short story.
There are CPs, but this one is a foreshadowing of childhood in the first chapter, so it doesn't appear.
Concept: black childhood