Chuncheon, South Korea, was the training site in 2018 for Team USA figure skaters.
"The U.S. team spent much of its time at the Olympics practicing a couple of hours away in Chuncheon, South Korea."
https://skatingmagazine.usfigureskating.org/article/Skating_201804_12 (scroll down)The Chuncheon site was not just for the women. I remember that according to Mirai, Vincent discovered at the eleventh hour that he accidentally packed his Opening Ceremony uniform in luggage that already had been sent to Chuncheon. Luckily, an extra Opening Ceremony uniform somehow was found for Vincent.