(MC POV)
I decided to maintain my invisibility and follow Diao Chan around to watch her 'work'.
Seems like her position as "Mistress" meant that she had to go around torturing men all around the castle.
Like she could just be walking along the corridor and meet a man wearing one of those fetish outfits crawling towards her front from the opposite direction. She would then pause to kick him or beat him up before moving on, leaving the guy writhing on the ground.
I would be worried about the guy who got beaten but the fact that he was moaning in pleasure made me move on without checking on him.
She then moved past some servants who were busy cleaning the floor and she stopped to lift her leg slightly into the air.
One of them would immediately kneel down in a curled up position on the ground, presenting his back to her so that Diao Chan could step on his back.
Always has been