When is the video head not bad, but this time is bad?

confused, Wu Yinan checked the video head again, but he didn't find out the reason. It seems that it broke down naturally.

Wu Yinan, puzzled, walks to the door and frowns at the corridor Just then, the cleaning aunt came with a mop. Hello, Auntie Wu Yinan stepped forward and looked at the woman cleaning her office with a smile and said, "did you see anyone enter my office?"

the cleaner opened his mouth and said with a smile, "Secretary General Cheng asked me to open it. She said he told you that you asked her to take...