Because of Corona, I had more time at home, and I thought I should learn something more in the new year. So I looked into various lectures and started with Younghan's lecture. Starting from the introduction to Spring, I learned about these functions and these principles one by one, and the more I learned, the more I wanted to learn. Since I have experience teaching someone, I know even better how difficult it is to convey my knowledge to others, so I listened to the lecture with great admiration. Thank you so much for the great lecture :) ! As a side note, my friend recently joined Younghan's company, and when I told him that I was taking Younghan's lecture, he said that he was a developer he really respected! When I said that I wanted to get his autograph, he said that he couldn't meet me yet because he was working from home, lol. I don't know if he's met me now! Anyway, the lecture was really, really helpful, and I'm going to listen to the next lecture!