C1811 No One Stopped You When You Were Beaten

Xiao Yan had thoroughly investigated Wen Xian and knew that Wen Xian had no opportunity to get close to Zhan Mu. The only person in the Crown Prince's residence who had the chance to approach Zhan Mu and dare to poison him was the Crown Prince himself. If the world discovered that the Crown Prince poisoned Zhan Mu, it would sever their mentor-student relationship