Will air conditioning harm my Android tablet?

If the Lenovo Tab is like right near an air conditioner then I don't know.
If it's far away from an air conditioner, then I doubt anything would happen to it.
All in all, I doubt air conditioning will affect your tablet.

Circuits and boards love cold air. Not like 'in the freezer' up in their face cold air', but they love normal room cold air. Most devices (I know Apple does) have temp sensors for extreme heat and cold and they will show a warning and shut down in either extreme case. Best luck.