Twice. Xidian university official website shows that in-service graduate students in xidian university have two chances to reply. To graduate smoothly, you need to take relevant exams, so xidian university has two chances to reply. Xidian university, referred to as "Xidian", is located in Xi City, Shaanxi Province. It is a university directly under the central government and the Ministry of Education. It is a national key university jointly established by the Ministry of Education, the Ministry of Industry and Information Technology, the National Bureau of Science, Technology and Industry for National Defense and China Electronics Technology Group Corporation.