There was still one thing about Shangguan Xiu that made Prince Jia Sen want to figure out, which was that previously, when Chen Menglu was poisoned, she went to Prince Jia Sen for help to detoxify. Prince Jia Sen helped, but he couldn't completely remove the poison from Chen Menglu's body, only half of it.
Moreover, Prince Jia Sen found the poison in Chen Menglu to be very strange and potent.
After asking Chen Menglu, he learned that the poison was administered by Shangguan Xiu, which made Prince Jia Sen even more curious about him.
However, after seeing Shangguan Xiu being deceived by a decoy with the mask trick, Prince Jia Sen started to think that perhaps he had overestimated Shangguan Xiu in the past.
