This is the completely renewed Sejong Korean Series edited by the King Sejong Institute and first published in 2022.The series consists of levels 1A to 4B, each divided into sublevels A and B.The centerpiece of the textbook series is the Student Book with audio files are available for download via QR codes printed in the books. The books contain an awnser Key and transcripts of the audiofiles.The Workbook contains exercises following the contents of the Student BookThe Extension Activity Book...