[seanmcdirmid]

The problem is that China doesn’t allow for central heating south of the Yangtze. So my coldest winter ever was spent in a small town in south Hunan, where it was above freezing but the lack of indoor heating really beats you down, kotatsus not withstanding. A friend of mine has parents who migrate to “northern” China in the winter so they don’t freeze to death.

Japan had a similar problem being previously not very rich (they invented kotatsu for that reason).