The back wall of the shop on the first floor is the fire escape of the underground parking lot. May I open the window?

I wonder the significance of opening a window on the back wall of the parking lot.

The purpose of opening the window is nothing more than ventilation, lighting and smoke exhaust. According to your description, the first two items can't be realized, and smoke exhaust will be prohibited by the property: besides, the back wall is generally a load-bearing wall, and opening the window will have potential safety hazards.

Be careful!