Younghan! Thank you for always giving great lectures. ㅎㅎ While working on the SI project, I took Younghan's lectures to learn in order to transfer to a service company, and recently, I was lucky enough to pass the Nekaraku Cup Backend Developer Exam! I have never met you in person, but I always think of you as Younghan's disciple in my heart and am proud of you. I will continue to take Younghan's lectures at my new company and become a fast-growing engineer. Thank you always!