A PVP unit mostly with her insane ambush counter that stops dolls from attacking and using skills.
While she is fine in PVE content, Belka usually does more than her. But she doesn't function well until you have a good amount of dupes invested in her (V3 is the recommended minimum).
V3 is the breakpoint for her to be a useful doll, but very expensive and electric has better dolls at lower investment than Jiangyu so only get it if you wanna be a PVP main.
Decent damage boost and some skill points gain for her ambush, but still not worth considering the core price, get it if you love her.
