On the afternoon of the 28th, Mnet M countdown camera rehearsal was held at CJ E & M Center in Sangam-dong, Seoul.
DIA poses in Photowall.
About DIA
DIA is a South Korean girl group formed by MBK Entertainment. The group is currently composed of six members: Eunice, Jueun, Huihyeon, Yebin, Chaeyeon and Eunchae.
 Wikipedia