The voice sounded like it was Guo Peng's mother, Qiao Guilan.
"We're from the city police department, regarding Guo Jing's case, we'd like to speak with you to gather some information."
Luo Fei stood in front of the peephole, showing his police badge.
The person inside must have seen it, as there was a pause, followed by the sound of the door lock turning and her disgruntled muttering, "Why are you coming at this late hour to gather information? Do you policemen not rest?"
"We can't help it, Auntie, please understand."
Watching as the other person opened the door, Luo Fei smiled apologetically and casually asked, "By the way, Auntie, is your son Guo Peng at home?"
"He's sleeping in his room."
Qiao Guilan never expected they would come to arrest her, instinctively pointing towards Guo Peng's room with her mouth.