Ah, so she did use her powers on him. That's a bit of a relief because the presented rules of her golden finger were that she could only use it once per person.
Damn I thot he was going to see her rat like that Last Emperor arc (who resembled Zero the most). But oh well, it seems he isn't immune to her fake sister either. That brings to next question, is Su Lu Xia immune to it tho?
It's a little strange that she still has an attachment to her birth parents, the faker that is. Usually in stories like this they tend to disappear pretty quickly.