According to the comment on my last post, my brother is not actually going to teach in Jeongseon. He's in Gohan, a few valleys over from Jeongseon. Interestingly, it's the home to the only casino in South Korea that South Koreans can gamble in. It's also going to open a ski resort in December which has made him happy, no doubt.
Hopefully he'll post something about the hamlet soon.