Han Geng (Chinese: 韩庚; Pinyin: Hán Gēng; Hangul: 한경) (born February 9, 1984) is a Chinese Mandopop singer, actor and skillful in all China's 56 ethnic traditional dances, as well as ballet and hip-hop dance. He has been dubbed "Dancing King" and "King of Popularity" in China. He started his career, in 2001, when he was chosen by SM Entertainment (SME) to become a member of South Korean boy band Super Junior, which debuted in 2005, and as the leader of its sub-group Super Junior-M in 2008. On 21 December 2009, Han filed a lawsuit against SME to terminate his contract as he felt that the 13-year contract was unlawful, overly restrictive and unfair. He also argued that he was forced to do things outside of his contract and refused sick leave which led to kidney illness. and has since returned to China to pursue a solo career. On 21 December 2010 the Seoul Central District Court ruled in favor of Han, however a representative of SM Entertainment said that they will file an immediate appeal to reverse the decision.