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
조선 시대에 사송을 제출하는 것은 중요한 일이었다.Joseon sidae-e sasong-eul jechulhaneun geos-eun jungyohan ili-eotda.Submitting a civil petition was an important matter during the Joseon Dynasty.