"How did they scare you?"
"With a recording. That Walkman belonged to Xu Chen. They recorded the ghost woman's wailing from a horror movie and secretly put it in my schoolbag. We were walking home together after school. Halfway there, I heard the crying and asked the two of them about it, but they both played dumb. I thought I'd really run into a ghost. I was so scared I ran for my life, crashed into someone, and fell. Only then did they laugh and tell me they'd put a Walkman in my bag. I was pretty mad... but I didn't take it too seriously. Later, we talked about how to scare someone like that. We discussed putting it in someone's bag or inside a desk... We talked it over for a long time, but couldn't find the chance. Then senior year started, and things were different. There was more schoolwork, and everyone was on edge... It was just... uncomfortable..."
"Mm."
"Mr. Sun had taught us for over two years. It was our third year with him. He was young to begin with. Before taking our class, I think he'd only taught the class before us... for one year... He could talk to us easily. Our math scores were pretty good, too, and we usually did well on his weekly tests... That day was the math weekly test. A few of us were packing up late, and most people had already left. He was also delayed because the class monitor had asked him a question. We thought we'd scare him a little. Xu Chen and Xiaojun gave me the Walkman. The plan was for me to sneak it into his bag. They were both tall, so they could block Mr. Sun's view. But his bag was under the podium... I