C661 The Disappearing Shen Wannian!

The monitoring room was silent, only the sound of walking could be heard from time to time.

No one appeared on the screen, as if there was no one in the corridor.

"Adjust it back to five seconds."

The monitoring manager received the order and pressed the reverse button. The scene returned to five seconds ago.

There was nothing suspicious on the screen. When he looked at Cao Jiang