There are long-term training sessions and they need to be booked in advance through the phone.
Wikipedia https://zh.wikipedia.org/wiki/國技院
Official website http://www.kukkiwon.or.kr/
电话 +82 2 567 1058
地址 Kukkiwon 635 Yeoksam-dong, Gangnam-gu, Seoul, South Korea
坐标 37°30'7.553" N 127°1'48.734" E
