Lin Dongxue and Xu Xiaodong immediately went to the little community and found a plumber from the small advertisement posted on the bulletin boards. Along with the plumber, they then knocked on the door of Wang Jinsong’s neighbor downstairs.

After a brief explanation, the family was willing to cooperate with the police. The plumber busied himself with the pipes and worked to open the main sewer pipe of the family’s bathroom. He used some tools to scoop out the contents.

“Officers, do you want a cup of tea?” The host family poured cups of tea attentively.

“No thank you. Ah yes, what do you know about the family upstairs?” Lin Dongxue asked.

“Master Wang's family? Although we live in the same building, we don't usually come into much contact since we don’t leave the house very much. But we often hear the sound of them beating their child.”

“Beating...