Yes.

Yes, but do not tell others all your account numbers and passwords, otherwise your degree certificate code and a series of other things may be leaked.

The China Higher Education Student Information Network is a large-scale database based on student status and academic qualifications established by the center, integrating college admissions, graduate employment and national student loan personal information. It has opened a number of social information service systems and e-government systems such as a student status and academic qualification information management platform, an academic qualification query system, a master's degree online registration and admission check system, an academic qualification certification online office system, a national student loan student personal information system, and an employment channel.