XIA (born Kim Jun-su; 15 December 1986 in Gyeonggi-do, South Korea) is a South Korean singer-songwriter, dancer, and stage actor. He is a member of the Korean pop group JYJ, and was one of the original members of boy band TVXQ.
XIA made his debut in 2003 as a member of TVXQ, a boy band produced and formed by South Korean record label and talent agency S.M. Entertainment, having previously been a trainee for six years. He had released four Korean albums .
