After entering the building, Lu Chuan didn't take the elevator but instead took the stairs to the staircase between the first and second floors.
From the surveillance check just outside the door, there was a rain shield above the building entrance, directly facing the window of the staircase.
If the theft suspect didn't exit through the building entrance after committing the theft, could it be possible they climbed out through the ventilation window between the first and second floors to avoid surveillance at the entrance?
"We've checked here as well. The window can be opened from the inside and someone can go through it, but there are no climbing marks, it's very clean."
Yuan Shaokang saw Lu Chuan going upstairs and knew what the other wanted to see.
The people from the High-tech Zone Criminal Investigation Team were no dummies and had checked almost everything after receiving the report.
