Then, he gently smoothed it with his fingers, making it blend perfectly with the surroundings.
If you don't look closely, no one would notice these inconspicuous marks at all.
Layer upon layer, he repeated the same action.
At this moment, rather than resembling a gas company's pipeline inspector, he looked more like a skilled craftsman meticulously repairing the flaws on the wall.
Just as he reached the corner of the fourth floor and was about to head to the fifth floor.
"Thud thud thud..."
A series of urgent footsteps suddenly echoed from upstairs.
Someone was coming down!
The middle-aged man's chewing of gum came to an abrupt halt, and his right hand instinctively reached for the side of the toolbox at his waist.
His muscles instantly tensed, like a fully-drawn bow, seemingly ready to spring into action at any moment.
The footsteps got closer, accompanied by muttered words of annoyance:
"Damn it, how did I leave the documents at home... I'm going to be late now."
