School of Mathematics, Hohai University Graduate School, Jiangning Campus, Mathematics and Applied Mathematics. According to relevant public information, Hohai University is a national key university directly under the Ministry of Education with a history of more than 100 years, featuring water conservancy, focusing on engineering and coordinated development of multiple disciplines. It is a university that implements the national key construction of 2 1 1 project, the innovation platform of national dominant disciplines, the double-class construction and the approval of the Ministry of Education to set up a graduate school.