/kloc-0 0 year. Cao Haitao 1996 graduated from Suzhou University, graduated from Suzhou University in 2002, and graduated from the Department of Mathematics of Tsinghua University in July 2004 as a postdoctoral fellow. Academic visits to universities in many countries; He is a professor at Nanjing Normal University, and he has a 1-2 test. He did very well.