 She competed at the 2006 Asian Games, where she won a gold medal in the team event and a silver in the individual, and at the 2010 Asian Games where she won gold medals in the individual and team events.In 2013, Yun was again selected for the South Korean team after two years of absence.She achieved great success, reaching the semi-finals of the 2013 World Archery Championships, winning two stages of the 2013 Archery World Cup and, on 22 September 2013, she defeated Deepika Kumari from India with a score of 6-4 to win the 2013 Archery World Cup Final, ending the year again as the number one ranked archer in the world.