Hello, Jae-hwa Shim! This is the instructor :D First of all, thank you so much for taking the <Next.js Master Class: Part 1 - The Essence of App Router and Rendering Design Learned Through Missions> course and for leaving such a valuable review, saying that the "lecture explanations are kind and systematic, making it easy to understand." The feedback you left gives me great strength. I sincerely hope that the essence of App Router and the rendering design methods you learned through this course will be of practical help in taking your front-end development skills to the next level. To show my gratitude for your passionate learning, I would like to offer you a small benefit. If there are any additional courses you wish to take among our curriculum, please feel free to contact me at the email address below. I will send you a discount coupon immediately after checking. Inquiry Email: jeony0535@naver.com Thank you once again for taking your precious time to leave such warm words. I will sincerely root for your growth! :D