Hello, I'm instructor Baekoblin :) I think you must have had a lot of trouble taking the class due to the sound problem ㅜㅜ, I'm sorry! I listened to it roughly (I couldn't listen to the whole lecture again ㅜㅜ) to fix the part in question, but it's hard to check the problematic part :( Can you give me feedback on the part that was problematic? (Please feel free to leave your opinion about the student's class environment, sound quality, etc.!)