Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
사군이충은 유교의 중요한 가치 중 하나입니다.saguni-chung-eun yugyo-ui jungyohan gachi jung hanabnida.Loyalty to one's king is one of the important values of Confucianism.