âHi! Koreanâ is a series of integrated Korean coursebooks created for foreign learners who have started studying Korean because they like Korean culture. The contents of these textbooks include the latest trends in Korean culture, and various activities are presented so that learners can master the 4 areas of language; speaking, listening, reading, and writing. âHi! Korean 4Aâ is designed for learners to engage in area-by-area study of topics related to information and social issues, developing outward from simple communication so that speaking, listening, reading, and writing activities can be completed on in-depth topics. Additionally, following from level 3, \"Today's Expression\" and lessons on idioms have been included to expand vocabulary, and for learners preparing for the TOPIK exam, each unit can be completed with practical writing activities.