@tsbasatoru
Hello,

I was wondering, do you know of or have any resources on #ondol-type floor heating systems?
https://en.wikipedia.org/wiki/Ondol

I know it's #Korean, but there must be similar things in Japan?

You can guess that I'm thinking this could be a temporary solution (if they can make a little version with rubble and raw earth) for
- those who live in tents to stay out of the water
- to avoid breathing toxic fumes (from plastic burning)
- to make the most of the heat from the kitchen fire to heat at night and cold day