C79 Phoenix-li wife protector

According to her previous intelligence, Old Seven should like this Lady Wan. Why did he speak up for Murong Yue now?

"Old Seven, I let Lady Wan manage your Duke Palace for your own good. Murong Yue is just a little girl who would not stand up in front of others, although she has become a Seventh Princess, she had no choice. " The queen said unkindly