Hi! I cannot remember whether it's a Kdrama or a Cdrama, but I know it is a fantasy historical drama. I remember the female lead having a mentor who ended up being like the uber-bad guy. The bad guy was a super psycho and was obsessed with the female lead. He kidnapped her at one point and locked her up, and when he came to find her, she smacked him in the face, burning him with a torch.  And as she was running away, the dungeon caught on fire, and they were separated by a wall of fire, but they were still fighting. That was when the male lead came to rescue her. I hope this helps.?

can you give some more information