Wow, this is really amazing. I've taken many backend lectures from Infraon, but this is top tier teaching ability and he's really at the level of Hyunwoojin,,, This is really unbelievable, but can you please open an intermediate level backend lecture or an extension of it? It's almost solved all the concepts that were floating around in my head. Wow, this is really awesomeㅠㅠ Please open more lectures. I can't sleep because I'm looking forward to listening to the lectures and doing the practical training, seriously. Please really open more lectures ㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠ Hahahahaha This is really unbelievable, I was so moved before I finished the course that this is the first time I'm leaving a review for a lecture.