『Pungsanja』 divides concepts into topics so that they can be learned in short bursts, and includes examples and problems for you to solve on your own to confirm and apply the concepts.
We've organized the key content of each unit so you can see it at a glance, and the problems essential for actual practice are divided into two stages and included in the practice problems.

· A concept book that suits the learner's level. This concept book is like a private tutor who provides detailed explanations of concepts at the learner's level.
· Fun and not boring concepts Even seemingly difficult concepts can be easily understood through Seopoongsanja's unique clear explanations.
· A concise, short-term study guide. Reading a large number of concepts at once and then not knowing how to apply them to solving problems can feel overwhelming. Pungsanja's book structure allows you to read the concept explanations and immediately apply them to problems, allowing you to study in short bursts.