Lin Dongxue and Xu Xiaodong went over to Chenghai Sixth High School, where the classes that should have been in session were quiet at the moment. When they passed through the classrooms, Lin Dongxue said, "Everyone is doing self-study?"

"No, there are things written on the blackboards." Xu Xiaodong noted.

A boy leaning by the window said in surprise. "Wow, beautiful Elder Sister, are you a police officer?"

The students by the window were distracted and swarmed over to see what Lin Dongxue looked like. Lin Dongxue asked, "Where are your teachers?"

Boy A responded, "Our class was originally in session, but when they heard that the police were coming, they went away.”

Boy B explained, "The principal doesn’t allow them to be interviewed, so whenever a...