Hello Hak-jun! Thank you for your valuable review. 😊 Regarding the image quality and readability issues you mentioned, we will check them and request improvements to ensure there is no inconvenience in your learning. Also, if your goal is to prepare for the AICE exam like Hak-jun, after reviewing the basics of Python with this course, it may be more helpful to adapt to the question types by taking the [AICE] Associate Certification Mock Exam Problem Solving (12 Mock Exams) course alongside it. We will continue to improve to provide a better learning experience. Thank you.