( It's usual for new folks to be overwhelmed, so he's patient as the young man laughs, then smiles himself. )

Qingxuan. You can call me McCoy, and you're welcome. It's no trouble.

( come this way, steering him back down the wide corridor toward his quarters while he explains,)

The water's stored in a big tank, and then flows through pipes to spouts, where it pours out when we need it to. ( He winks at him, ) You're gonna love it.