|That's President Lee Myung-Bak, president of South Korea|
This will be the third time Winter Olympics is going to be held in Asia (first two being in Japan), and first time South Korea is hosting Winter Olympics. South Korea hosted Summer Olympics back in 1988, which is still greatly regarded as a cornerstone event for the nation's growth.
For an event that is still 7 years away, the whole nation stayed up late to find out if Pyeongchang had won. And it did - by a large margin as well. A lot of work and effort by many many people have paid off. It's a good day for Korea.
Source : IOC gets it right: Pyeongchang will host 2018 Winter Olympics
And many many many many many other Korean news articles.
EDIT : Ugh, this is officially the biggest news in Korea right now. If I hear any more "Pyeongchang" on television every 2 seconds I might go insane.