C153 It's worth the life of a princess?

Bringing Bai Qianfan back to Moon Reaching Pavilion, she saw that the princess had returned in a state like this, and the Moon Reaching Pavilion had also turned into a mess. After laying Bai Qianfan on the bed, Mo Rong Chi looked at Yue Xiang and Yue Gui and said, "You are both dead people, how can you let the princess go to the lake alone?"

How could Yue Xiang know what had happened