Hello, Mr. Kim Young-han! I am one of the many students who are taking your lectures. I started studying Spring in a hurry with your lectures, even though I didn't know much about backend for my class team project after returning to school. Thanks to you, I got good grades and made it to the finals of the hackathon today. I didn't know anything, but thanks to you, I was able to create various services with Spring and have such great experiences. Thank you for your great lectures. (: