Middle midfielder who joined up with Beijing Guoan in 2014 and joined up with the South Korean country wide group in 2008. He debuted appropriately for Ulsan Hyundai Horang in 2004. He obtained 19 goals in 112 fits for FC Seoul from 2010 to 2013. He was created in Incheon, South Korea. He and Lee Chung-yong became teammates within the South Korean nationwide team.