Okay so my theory is this: in past life FMC was either a doctor or med student, and she might have been in a relationship with MC's past life (whose name was mentioned in the early chapters) or a person who acts and looks like MC. Now I'm guessing past life version died or something happened to...
I'm still confused about Jiang yang being a noble pr not. Like didn't she ascend from the world she reincarnated to, if so wether she was a noble in the murim world or not would not matter in the rpg world, unless the academy administration literally did not check at all where she came from and...