College for three years, you can take the adult self-study exam and get the undergraduate certificate and bachelor's degree. This method can save you two years, but there are many exams, and I'm afraid you won't stick to it. Generally, you have to take more than a dozen subjects. That's how I got my bachelor's degree. You'd better find a few students in your major to take the exam together, so that they won't help each other, but also reduce the sense of pressure, and there will be more opportunities to retake the exam.

The five-year college entrance examination is a college entrance examination on the basis of college. It's an exam when I graduated from junior year. You only get one chance. The subjects you want to take depend on the school you apply for and how many courses you want to take. After you have passed the exam, you will go to that school to be a junior and start studying until you graduate. Of course, the diploma belongs to the undergraduate college where you graduated.

Self-study and college entrance examination can be prepared together.