2. Finance is a branch of economics. As long as finance has mastered elementary and intermediate economics, it will turn to financial practice (investment, corporate finance), while the Economic Society will continue to study economics-advanced micro and advanced macro.

3, general finance, that is, finance, has a higher requirement for mathematics, requiring learning one-dimensional multivariate calculus, linear algebra, statistics, probability theory and mathematical statistics, while general science only needs to learn one-dimensional multivariate calculus. Financial engineering has extremely high requirements for mathematics, which is similar to that of physics department. In addition to the financial mathematics requirements I mentioned earlier, we should also focus on mastering maddening mathematics such as stochastic processes. Economics also needs mathematics, which is similar to general finance. The specific situation is not clear, but it is definitely simpler than financial engineering.