Wanna One Yoon Ji-sung, who attended the mbc MUSIC 'Show Champion' on-site at mbc Dream Center in Ilsan, Goyang City, Gyeonggi Province on the afternoon of the 5th, is showing a wonderful performance.
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