This is my fourth lecture review! This lecture review is a bit late due to the start of the new semester.. I am a non-engineering major who took the Spring lecture and the Wild Course up to this point and then transferred to the Computer Engineering Department. I solved most of the things I didn't know in the Practical 1 lecture through the Q&A board, but after taking this lecture, I feel like the parts that were unclear have become clearer. When you recommended the Wild Course in the first curriculum recommendation course, I thought that I would only be able to take dictation if I listened to the Practical Course since I didn't know anything, but after studying like this, I think I understand why you recommended the Wild Course. The content is stuck in my head. Since I have decided to study Spring and JPA, I plan to continue following the curriculum you posted, so I am planning to purchase the newly opened lecture in advance during the discount period! I was a non-major until recently, but I can easily understand and follow it, so others will be able to follow it easily! I highly recommend it!! There is something I would like to get advice on. Looking at the course reviews, it seems that there are more people who are already using Spring in the workplace than undergraduate students, so this might be an embarrassing question, but I am an undergraduate student who has just changed majors, so I have no place to ask questions, so I am leaving my question here. I have been studying on my own since last year, and this year, I am looking into several university student clubs to interact with more people, and almost all of the backend groups are recruiting people who use node.js, not spring. So, while I am studying spring, I am wondering if it is right to learn node.js first as an undergraduate student. Since I do not have anyone to ask, I am anxious and whenever the thought comes to mind, I search Google whether I should study node.js or spring, but I cannot come to a conclusion. Can you give me some advice on this?