I suggest you study mathematics, its purpose is to create a reasonable thinking mode for you, which you will find when you learn modeling. With this mode of thinking, you can do anything easily. You can cross finance, engineering and software, but only if you learn math well.

What is needed is perseverance and endurance, and it is not difficult to learn well. Interest is talent.

If you want to go abroad, you should be better at math and English. After all, all the textbooks you have learned are in English. The translated textbook is blunt and not as powerful as the original. In addition, if you learn English well, it is easy to enter a foreign company and earn money. What is the way out to enter state-owned enterprises? Bah.

Come on, it's up to you.

By the way, you must learn applied mathematics.