[ He understood roughly half of that explanation. Maybe. Half might be being generous, actually. ]

Okay, that sounds fascinating, but I don't know what cultivators are. Or... golden cores? Or qi, for that matter.

[ Sorry, strange Professor. You might have just made your simple answer more complicated than you realized. ]

But we can just go with 'yeah, they healed each other with sex' and leave it at that, if that's easier. I'm assuming it might not work here anyway, if most of us are 'regular people'.