Ju Ju
Note: this is my guess of the storySo after past Xin was kicked out of the Yue family when the real daughter came back the real daughter approached Xin. Real daughter had beef with the world and Yue family did not help deal with her malice so she used Xin in some way to screw the world while staging a real or fake death that put blame on Xin. Then Xin would be forced into prison life to suffer as real daughter was not going to let someone who took her spot off easily so she made Xin witness the mess she made. This real daughter is manipulated and dark, using Xin who lost everything like a pawn.Note: this is only my interpretation with what I have read so far