sentences:  At the sabre 2010 World Fencing Championships, he won the gold medal, beating Nicolas Limbach 15 – 9 in the final.He competed as part of the South Korean team at the 2012 Summer Olympics in the men's team sabre, where he won a gold medal.In the men's individual event he lost in the last 16 to Nikolay Kovalev, the eventual bronze medallist.