It seems like a lecture with so much to learn. I'm really satisfied that there's such a high-quality lecture at this price. I wasn't very familiar with Kotlin, but through this lecture, I could learn a variety of syntax and usage, and the scalable interface form was also very impressive. Also, it wasn't just limited to Kotlin, but I learned so much, including encryption protocols that can be used regardless of the language, MySQL queries, and project code management, that I feel like I learned a vast amount just by listing them. It was a time when I eagerly awaited the next lecture. Thank you!!