The Evil King's Miracle Doctor, the Ugly Concubine

A modern medical doctor, an ancient jade bracelet transformed her into an ancient salt-free ugly girl. The father is unloved and the mother does not love her, so the princess is bullied everywhere. But who is she? She has a golden finger that is invulnerable to all poisons, and she has prospered in ancient times by relying on her own methods. But what's going on with the man you can't get rid of?