KBS 2TV 'Music Bank' rehearsal was held at the KBS New Hall in Yeouido-dong, Seoul on the morning of the 3rd.
Jung Chae-yeon of the group DIA poses as he moves to a rehearsal venue.
About Jung Chae-yeon
Jung Chae-yeon, known mononymously as Chaeyeon, is a South Korean singer and actress signed under MBK Entertainment. She is best known for being a member of the South Korean girl group DIA, and for finishing 7th in the survival show Produce 101, making her a member of I.O.I.
 Wikipedia