A jewelery brand photo event was held at the Es FActory in Seongsu-dong, Seoul on the afternoon of the 19th.
Singer and Actor Choi Siwon is attending and posing.
About Choi Siwon
Choi Si-won, known mononymously as Siwon, is a South Korean singer, songwriter, model, and actor known for his work as a member of South Korean boy group Super Junior.
 Wikipedia