Not every university has edu's email address. Schools and other educational institutions use edu's e-mail address. E-mail address with suffix. Edu(.edu.cn) is only open to students, teachers and educational institutions. Not every university has edu's e-mail address. Most schools will provide students with an EDU email address for free, but some schools will take it back after graduation or turn it into an alumnus. In short, the original address can no longer be used. Universities are institutions of higher education, which provide students with professional knowledge and skills education, and at the same time pay attention to cultivating students' independent thinking and innovation ability. In the university, students have the opportunity to meet outstanding professors and scholars from all over the world, exchange studies with students and broaden their horizons.