"What?" Clayton was scared to death. He looked at Billy in horror and said, "Mr. Lau, let's stop joking." But Billy's face darkened, "Do you think this is a joke?" He asked coldly. Clayton parted his mouth and did not know what to say. He was just a teacher, and although he was not a good one, he would, at worst, scold his students or charge them some extra tuition fees. A lot of teachers did this, so he did not think he had gone too far. But he had never thought about killing people. That was illegal! After noticing Clayton's refusal, Billy threatened, "Mr. Wu, you should know what will happen if these photos are on the principal's desk one day. Or perhaps they will pop up on the internet?" Clayton was shocked, and his face turned pale. At this moment, regret was the o