Some have been adjusted. Some have already planned to go in the direction of economy, finance or computer, that is, to lay a solid foundation in mathematics in four years. Because many people who are engaged in computer science, those who are majoring in computer science, regret why they didn't choose mathematics as their undergraduate course at that time, because mathematics is really important if they want to make great progress in technology. It seems that many big cows on Wall Street are all scientific mathematics majors. .