Xiuying knows that the plans to hide his identity has failed big time when Ruoxing directed his question to him. So there was no need for him to keep pretend.
He was just concerned with how Lui would feel about him being not just a member of a secret group but the leader as well.
"How can I trust just your word and send my men to those places when it could only be a setup?" Xiuying said to Ruoxing.
Lui also noticed the shift in who Ruoxing directed his question to, so Xiuying answer made him understand what was going. He was the leader of the other secret group!
It was then that he recalled Aiguo and Jun been so secretive about where the skilled doctor who healed them after Xiuying had saved them was.
The two had been tight-lipped about divulging details about their rescue. Lui felt like he was so stupid for not been suspicious about the guy a little bit.
