I don't usually leave course reviews...but I'm so satisfied with this lecture that I'm leaving one. First of all, I've watched several Next lectures, but most of the time, they just tell you how to use it and move on when it's hard to explain in the lectures, so I always wondered why I should use it and what's different. Even when I looked at the official documentation, there were many ambiguous parts, so there were parts that I didn't understand. But after watching this lecture, I understood most of it. First of all, the explanations and materials are easy to understand, and after explaining the theory, they showed it again through practice, so this lecture was the best lecture I've seen by Jeong-Hwan. The previous lectures were good, but I think it's the result of a lot of thought and feedback. I'm really looking forward to the next lecture~~ I think it would be good if Next produced a practical lecture.