After completing the course, I think the instructor must have worked very hard to create this course. I think it would be hard to find a course that explains complicated concepts like proxy and AOP step by step with examples in an easy-to-understand manner. Overall, I feel that the buildup of the course is really detailed and well-organized. In my case, while learning about template callbacks, I had doubts about whether these concepts were connected to AOP, which I had briefly learned in the early Spring course. However, after passing the proxy part to some extent, I was convinced that all the previous concepts were the foundation for AOP. I think it was a course that conveyed the instructor's hard work for us. Thank you for creating a great course :)