Hello. I think I've watched all of Younghan's lectures except for one. They were really helpful. I always felt a sense of fulfillment from reviewing what I already knew and learning something new. And after a certain level, there are times when I have to take the lead in designing or developing, and every time I worry, "Is this right? Is that right?", I've been able to resolve a lot of that while watching the lectures. I felt frustrated because I didn't have a place to ask questions directly, so I put it aside for a while and buried it somewhere in my head, and now I feel like I'm finally solving it? I really liked the feeling of solving it one by one. I hope you'll continue to give me good lectures in the future. Thank you.