Jeong Yoon-oh, born as Jeong Jae-hyun, is better known by his stage name Jaehyun. He is a South Korean singer, rapper and actor and a member of the South Korean boy group NCT and its sub-units NCT U and NCT 127.
Stage name (international)Jaehyun
Name (international)Jeong Yun O
Date of birth14.02.1997