C734 Black Sand?

Su Leh felt that Lu Qianqi's conclusion could be proven. She remembered that when she saw Mu Lancheng, his mood fluctuation was definitely not something that could be displayed just by acting. He must have felt anxious and uneasy, and even felt guilty towards Mu Xiang.

He was indeed Mu Xiang's junior brother, and was also very respectful to his senior sister back then