C401 Missing scenario

The lady in the video was wearing the same clothes as her, a peaked cap on her head. When she got out of the elevator and saw that there was no one inside, she sneaked into Lu Jianqing's office.

The door to the office was closed. After a brief moment of silence, the door was opened again. When the woman came out, she held a brown paper bag in her hand and purposely lowered the brim of her hat