Chu Zhao walked into the washroom. He saw Su Bai washing his hands at the basin and asked in suspicion:
"What's wrong?"
Su Bai placed both hands at the hand dryer expressionlessly. His gaze was directed at the cubicle meaning 'take a look for yourself'.
Chu Zhao immediately opened the cubicle door; he was shaken.
"Call the cops."
Chu Zhao took out his phone and was preparing to call the cops. Even though he was not fond of the police profession, when facing such situations, his professionalism kicked in.
Su Bai did not do anything nor did he move; he quietly dried both his hands and walked out of the washroom.
After a short while, Chu Zhao walked over after making a call.
"Discovered anything?" Chu Zhao asked Su Bai.
Su Bai shook his head and looked at Chu Zhao. "It does not seem to be the work of an audience. It is hard for normal audiences to do such things. You are a cop, you go and investigate."