The delayed graduation rate of doctoral students in colleges and universities in various regions of China has basically reached more than 0.5%. This is because the average study period of doctoral degree winners in China is 4-5 years, and when doctoral students graduate, they are not only required to write a graduation thesis of tens of thousands of words, but also have an irregular rule: they need to publish many academic papers in domestic or foreign journals, which also makes the graduation pressure increase sharply.

Suzhou University, referred to as Suda, is located in Suzhou City, Jiangsu Province. It is a national "world-class discipline construction university" jointly established by the Ministry of Education and the People's Government of Jiangsu Province, and the national "2 1 1 Project" and "201/Plan" were selected as the first batch of universities. Soochow University, formerly known as 1900, is the first university in China to establish a modern university discipline system. It is the first university in China to establish a periodical, the first professional education in law (Anglo-American law) and the first postgraduate education. 1952 faculty adjustment, Suzhou University College of Arts and Sciences, Sunan College of Culture and Education, and Jiangnan University Department of Mathematics and Science merged to form Sunan Normal University, which was renamed Jiangsu Normal University in the same year.