The North Prince was right; she was such a useful tool that the Yue Emperor shouldn't have sent her out unless he found her more useful in the North Country than remaining in Great Jue.
The North Prince was an ambitious and capable man. If he could use her to control the North Prince, he could be very useful in the future.
But then again, even if that were true, it wouldn't matter anymore.
Lu Chen had already seen through the Yue Emperor's conspiracy and knew the purpose of the Virgin Mark. Most importantly, the Virgin Mark was useless to Lu Chen, which meant the Yue Emperor's plan had failed.
At that moment, Lu Chen said with a smile, "Originally, the Yue Emperor planned to use you to control me, but now you've lost your innocence, and the Virgin Mark didn't work on me. If the Yue Emperor knew the Virgin Mark had no effect, do you think he would still trust you?"