All flights in South Korea will be grounded Thursday, with no take offs or landing permitted for an hour.
원문출처 : https://www.cnn.com/2018/11/14/asia/korea-csat-test-cheating-intl/index.html
원문출처 : https://www.cnn.com/2018/11/14/asia/korea-csat-test-cheating-intl/index.html