Basic economics focuses on theory, but with the deepening of research, more and more mathematical knowledge will be needed as a tool for modeling and analysis. If you majored in western economics, you don't have to worry about math problems. You mainly use 2 yuan's 1 degree equation. Courses such as finance will require knowledge of introductory theory and mathematical statistics, but it is not difficult to set up relevant mathematics courses for post-university economics majors, and the landlord can study hard in class.