The two Koreas have technically remained at war for decades, although a post-World War II armistice has kept an uneasy peace along a heavily fortified border. It has also for the most part kept the two populations separated.
Lee, 17, is competing in her first Olympics, according to CNN.
Hong is a veteran gymnast who won her country’s first ever gymnastics medal at the 2008 Beijing Games, taking home the gold in the vault event.
4. On Monday, the two gymnasts smiled and posed for photos together during their Rio events.
