It was solid. If I had to pick the best lecture in my life, I would definitely pick this one. It is a legendary lecture without a doubt. It is very easy to understand the explanations with pictures, and in the next lecture, we review again. It is the best. I also paid for the Java lecture. I also paid for Nap 2 and will listen to it well. Please continue to upload lectures. If there is a lecture with the three letters of your name, Instructor Park Mae-il, I will definitely come listen to it. It is the best. It is a shame that there are only 5 stars. It is the best lecture that I would give 100, no, 1000, 10000 stars. Thank you.