In accordance with the authority requirements, and based on the epidemic situations and practical work, HNU announced on May 18 the date for the returning to campus of the second batch of students. Beginning May 22, doctoral students, and postgraduate students who are in their second or above year, could return to the campus for study and research, after receiving approval. Students in other grades should still wait for further notifications. The returning students are required to prepare themselves, and make good self-protection during their returning trips.