K-POP concert will be held at the Gwanghwamun Square in Seoul on that day. There are KPOP idol group EXO, BTS, Twice, etc. in concert. The concert, which celebrates the PyeongChang Winter Olympics and sacred-torch relay, will also begin to the PyeongChang Olympic Stadium.
Concert entry tickets are eligible for entry to Pyeongchang Winter Olympic Games and Winter Paralympic Ticket Tickets, and the total number of winners is 500.
But, since it's open place to the public you can go Gwanghwamun Square and see it.