wait what about kids that jinwoo teach? what they contribute to stay in that town?

I think they probably was born within the town so may Huron thought they could repopulate/grow the town

Guwon *

I don't think so.. The apocalypse is only so recent so I doubt they are born in this town

What I was confused about too. Maybe he started to let children in for the sake of keeping a steady population but only once the town got in a better place. Hmmm