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
서당식 교육은 전통적인 방식으로 이루어졌다.seodangsik gyoyuk-eun jeontongjeogin bangsik-euro ilueojyeotda.Instruction in the schoolhouse was conducted in a traditional manner.