Second, it is difficult to get into accounting and financial management for postgraduate entrance examination. You can ask the accounting department. It's difficult to learn advanced mathematics by yourself, because you can't learn several majors in one class and you don't learn advanced mathematics.
Third, the key to changing majors depends on your grades in the first semester of your freshman year. There are vacancies in accounting or finance that need to be changed. It is said that the competition is very fierce.
Fourth, to be honest, I don't quite agree with the second major mentioned above. Many enterprises do not recognize double majors in recruitment, and it is thankless to spend money. You can take the accounting certificate yourself. My Japanese classmates have already filmed it.