This is the number of registered students by specialty. Even in the first year (or maybe two years), the basic subjects are the same, and everyone studies together. After that, it will be divided into majors, and the majors will be selected according to personal wishes (after all, everyone's choices are different) and previous academic achievements. I did the same thing in college. I was a sophomore majoring in electrical engineering and automation when I volunteered. Nothing, it's fine. After all, I just graduated from high school and don't know much about various majors. After studying for a period of time, you may choose something that is more in line with your personal interests.