1. There are very few graduates from Southeast University, which will take three to five years, but it is uncertain whether they can graduate. It is difficult to graduate from Southeast University, which is the key 985 university. Ph.D. chemistry is less difficult, but science and engineering are more difficult. Everyone's learning ability is different, so the specific difficulty varies from person to person.

2. It is relatively difficult to graduate from Southeast University, because both universities are located in Nanjing, Jiangsu Province. They are national key universities under the 985 Project and the 2/KLOC-0 Project directly under the Ministry of Education of China, and enjoy a high reputation in the field of engineering education at home and abroad. The difficulty of graduation of mathematics doctor requires publishing a doctoral thesis, which has more than three influencing factors and has certain patents.