Biyografi
Jeong Taek-hyeon is a former member of the Korean boy band group 1THE9. He was a contestant in MBC's survival show, Under19 (Under Nineteen). He ranked 5th position in the survival show and became a member of boy group 1THE9 for 17 months. He debuted in 2009 as a child actor, he first appeared on Waiting For My Mom.
