The space on the back of the central building was used for vegetable and herbs plantation with the surrounding area used for planting fruit trees... this place was essentially self-sustaining and if an apocalypse hit, this was the best place to build a safe-zone, yes, these were the words of ChunHua verbatim, who said them with a smug look on her face for some reason.
It seems, even ChunHua had some wild imaginations now and then.
Anyway, after a short trip around the building, they came back to the lounge again, only that this time, the place was filled with around fifty teenagers who looked to be high-school students...?