Career in South Korea
Born on November 23, 1985 in Seoul. For the first time took part in the Olympic games in 2002 at the age of 16 years, took 4th place in the distance of 1000 meters.
At the next Olympic games won three gold medals at a distance of 1000 and 1500 meters and the relay race, 5000 meters. Also took bronze in the 500 meters.
Won more than 30 medals at the world Championships (more than 20 of them were gold).
In 2008 he suffered a serious knee injury, the recovery period took more than a year, that failed to qualify for the Games in Vancouver in 2010.в