Singer Lee Hong-ki Yoon Ji-sung Kim Yul-hee Yoo Seung-seung enters the Ilsan MBC Dream Center in Janghang-dong, Ilsan-dong, on April 23 to attend foreign broadcasting.
About Yoon Ji-sung
Yoon Ji-sung is a South Korean singer and actor. He is best known for finishing eighth in the second series of Produce 101 and is the former leader of South Korean boy group Wanna One.
 Wikipedia