On the 2nd, when the new semester began at elementary, middle and high schools across the country, teachers greet students at Jongam Middle School in Seongbuk-gu, Seoul, by clapping their palms. It is the first time in four years since March 2019 that a face-to-face entrance ceremony was held without wearing a mask. Registration of the Corona 19 self-diagnosis app, which was mandatory before school starts at each school, is no longer available, and the cafeteria partition and body temperature measurement are conducted autonomously by the school.