Hello, I am Jeong Hyeon-woo, a knowledge sharer. Before writing a comment, I would like to sincerely apologize for my lack of experience in reviewing the video. When reviewing the entire lecture, I think there were many mistakes in the so-called video cut editing because I focused on students taking the class quickly. I sincerely apologize for this, and I plan to revise the lecture by re-editing the entire video within September to make it more stable and adding explanations for all changes in the video. I apologize to the students for sending out an insufficient lecture, and I would also like to express my gratitude for giving them a high rating despite the lecture being insufficient. I will revise the lecture as soon as possible within September. Thank you.