In the process of solving this problem, Shen Wei used two original methods, mainly resolvent estimation method and wave operator method, and made contributions in the field of mathematics.

Mathematical problems in fluid mechanics equations were put forward in 2000, so they are also called Millennium problems. This problem was put forward by the Clay Institute of Mathematics in the United States, and it is also known as one of the seven major problems in the world. There is still no method for 20 years, which shows the great difficulty, but Chinese talents have made original contributions to these worldwide problems.

Wei Dongyi, graduated from Peking University, is an associate professor of Peking University, and a researcher in the Department of Differential Equations of Peking University Institute of Mathematical Sciences.