I Really Don't Hurt Anyone

On the first day of school, Qiu Baiheng brought a knife and put it on the table. You said he was in danger. He had not used the knife yet. You said he was not dangerous, but he put the knife on the table. I thought the teacher would scold him and ask his parents, but there was no response for half a semester. As time went by, his good deskmate Xia Heyuan would still use his knife to cut watermelons and the like from time to time. It wasn't until the bloodless knife saw the blood that everyone realized that he couldn't do anything even with the knife. And Xia Heyuan looked at him from the back of the chair. The best thing to say is, the sky is going to die.