"No wonder the rest of the place is covered in dust while only that spot is clean. It turns out that he used an approach like this," Li Xianghui said.
"The murder method has been confirmed, but there is another problem. How did the murderer confirm that Du Juan was asleep?" Gu Yiran said.
"He wasn't in the room at the time of the crime, so there was no way to determine Du Juan's state. If the tape had been removed early, Du Juan, who wasn't asleep yet, would have noticed immediately. His plan would have been exposed."
"Cameras!"
"Have you forgotten? When we were searching, we found a total of four pinhole cameras that were placed in the two bedrooms, the toilet, and the kitchen. Du Juan was closely watched, so her every move was clear to the perpetrator. It was not difficult to confirm her state at that time."
Gu Yiran frowned and looked confused.
