Lee Eun-ju is a South Korean gymnast. She is representing her country at the Summer Olympics in Rio de Janeiro. Hong Un-Jong is a North Korean gymnast. She is the 2008 Olympic vault gold medalist. Like Lee, she is the only woman gymnast representing her country at this year's Olympic Games. The two athletes competed in the same session. During a practice, photographers caught the two athletes taking a “selfie” together. The 17-year-old Lee is seen holding her phone and smiling as 27-year-old Hong leans in for the photo. She is smiling, too. It was a rare moment of inter-Korean friendship. The photo is being praised for representing the Olympic goals of building peace and understanding between countries. North Korea and South Korea remain deeply divided.