first.""Hello, teacher. I'm Xiaoxiao's mother. I have to work overtime today and won't have time to pick her up, so I asked my cousin to pick her up instead." A woman's voice rang out over the phone....t. Many people even controlled their breathing, afraid to take a deep breath.All eyes turned to Yang Chen, hoping to see a hint of fear on his face.But to their disappointment, Yang Chen's face showed...