Deputy chief Yan continued to knock on the door. "Wang Xu, Wang Xu, are you inside? I'm here alone and unarmed. If you don't believe me, you can take a look through the window."

Deputy chief Yan shifted over to the first row of windows. He lifted his clothes to show the other party that he was not carrying a gun. Lin Qiupu and the others were nervously guarding the passageway by the school gate. Lin Qiupu asked Wang Xu’s teacher, "Is there any conflict between these three children?"

"I don't know much about this."

A female student came out of nowhere and said, "Uncle policeman, I know that Liu Dong and Ma Fei often bully Wang Xu. I saw them press Wang Xu’s face into the sandpit on the playground several times after school. He was also forced to play 'Aluba'[1] or something. It was clear that...