Educational nature: generally, it is an advanced educational research institution after a university, which is located in a university and exists in the form of a "university graduate school". Nature of enterprise: Most of the funds come from enterprises, providing technical support for enterprises and serving the sustainable development of enterprises. If you don't have a degree, you can't get a diploma.

Government nature: The funds come from the state appropriation, and research the cutting-edge things in politics, economy and science and technology to serve the country.