Can Shanghai Jiao Tong University Graduate School resume studies at any time after suspension?

Any time. Postgraduate students who wish to resume their studies upon expiration of their leave of absence must fill out the "Shanghai Jiao Tong University Graduate Student Resumption Approval Form", obtain approval from the dean in charge of the college, and report to the Graduate School for approval at any time to go through the resumption procedures. A university is a type of school that implements higher education, including comprehensive universities, junior colleges, and colleges. It is an organization with unique functions.