I read this really good manhua a long time ago that had a super strong female lead who is reincarnated into the life of a girl who was super weak and bullied. The girl she transmigrated into had a facial disfiguration caused by poison and the female lead cultivated her qi or whatever it's called to remove the poison and start practicing martial arts.
She starts getting revenge on the evil people in her family but keeps running into a man with black hair that she doesn't get along with. The man with black hair had a secret identity and he was also super overpowered but he occasionally turned into a baby ginseng when he was meditating.
EDIT: I was actually accidentally combining the plots of two different manhuas which was making it difficult to find. The part about the girl having a facial disfiguration is from the ghostly doctor and the part about the guy turning into a baby ginseng is from queen of poison. Iβve literally been scouring the internet typing in random key words until I found itππ