There is almost no explanation and it feels like watching someone code. Even if Mr. Baek Gi-seon or Mr. Kim Young-han didn't prepare thoroughly, they would give a lot of words here and there... It really feels like watching someone type... There are fragments for the explanation. I guess I have to connect the adapter? What kind of lecture is this? A lecture is something that helps someone who doesn't know learn, and muttering to yourself about what kind of code you are doing right now is a monologue... Even if the lecture fee is cheap, isn't it too much... I wonder if the instructor has taken other lectures... By the way, I'm trying to listen to the end, but I'm getting so angry...