On the afternoon of the 11th, Wanna One Yoon Ji-sung has a photo time at the photo wall Event of the group Wanna One held in the lobby of Sejong University's Ocean Hall in Gwangjin-gu, Seoul.
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