Minor: It is the second degree offered by our school. This advantage is that the course is easy to pass, but it can't be found online. It's just that the certificate reflects the word minor.

2.

Second degree: you can get a bachelor's diploma and a bachelor's degree certificate after graduation from your school. Reading a second degree can also get an undergraduate diploma and a bachelor's degree certificate, that is, the university gets two academic certificates and two bachelor's degree certificates. The advantage is that it is recognized by the state and can be found online. It is a formal national examination, not a remedial class.

Moreover, the state stipulates that a double degree is equivalent to postgraduate treatment (but this regulation may not be implemented in some places).

3.

So generally speaking, a double degree is more useful than a minor, but a double degree is not very useful. Just an extra degree certificate. It won't help much if you go to work in the company. But if you go to a public institution, under normal circumstances, your salary will be the same as that of a graduate student.