!" Principal Bai walked over with a smile, accompanied by Si He."Master Si You know each other" 歐顏 looked at him with a hint of surprise."Oh, I understand now. That's how it is."Let me know if you ha... to dissect the body and see what kind of poison caused it. Maybe we can find some clues," Ou Yan whispered to Li Yihan. "Tell mom and dad about this, don't let anyone else hear.""Okay, can you do thi...