Simply put, a personal mailbox is a kind of network address, which can be used to send text, pictures, compressed files and so on. For communication. In the network, the e-mail box can automatically receive the e-mail sent by any e-mail box on the network, and can store electronic files with specified size and other formats. E-mail has a separate domain name, and its e-mail address is marked after @. The general format of e-mail is: user name @ domain name.

Ningxia University is located in Yinchuan, the capital of Ningxia Hui Autonomous Region. It is a university jointly founded by the people of China, the Ministry of Education and the People's Government of Ningxia Hui Autonomous Region. It is a national "double first-class" construction university, a national "2 1 1 project" key construction university and a national "comprehensive strength improvement project for universities in the central and western regions". He was selected as a member of the Excellent Engineer Education and Training Program, Excellent Agricultural and Forestry Talents Education and Training Program, National College Students' Innovation Experiment Program, National New Engineering Research and Practice Project, National College Students' Cultural Quality Education Base, China Government Scholarship Receiving Agency, Demonstration Base for Studying in China of the Ministry of Education, Confucius Institute Scholarship Receiving Agency, and National Key Construction University Alliance (Z 15). The Ministry of Education approved the first batch of universities to accept foreign students.