This time, I am preparing to move from embedded and robot to web SPRING, and this is the first time I have learned SPRING through this lecture. The lecture speed is fast, but there is time to stop, follow, and understand, so it is not a big problem. I think the reason I felt it was fast is because I have a low level of understanding of the JAVA language. Through this lecture, I saw a broad overall picture, and I will work hard to succeed in my job change. Thank you.