C1735 How did you know that

As the house was a place to imprison Lao Zhou, at the same time, he was afraid that Lao Zhou would be disobedient and come over to beat Lao Zhou's head at any time, so there was no monitoring system here. It was only a camera, and after Li Feng entered, he stood in between the camera and Lao Zhou, blocking the camera.

Moreover, this time Triangle and Li Feng did not greet them in advance