In addition to applying for this major, you can also apply for some economic or engineering majors. I am an engineering major. I recommend one for you. Control science and engineering, the examination subject is advanced algebra (of course, you can also choose automatic control theory, and it is no problem to learn this with your basic mathematics). The undergraduate major of this major is automation, and so am I. After graduate school, I engaged in the research of control theory with mathematical knowledge. Generally, I will recruit several math majors, because after all, someone has to learn theory. It's also good to find a job after graduation, and it's also good to be a teacher after studying for a doctorate. After all, teachers with automation background are not very good at mathematics, so it is difficult to teach automatic control theory, a very mathematical course. There is only one person in our school who can teach automatic control theory. He studies mathematics. Even if you are not a teacher, it is very good to engage in research in graduate school. You can also take the postgraduate entrance examination directly and then stay in the institute.