Xiang Kainan, male, Tujia, from Yongshun County, Xiangxi Autonomous Prefecture, Hunan Province; 1Graduated from Mathematics Department of Xiangtan University in June, 993; 1993.9- 1996.6 studied under Academician Wang Zikun and Professor Li Zhanbing from the Department of Mathematics of Beijing Normal University; 1996.9- 1999.6 studied under Academician Ma Zhiming in the Institute of Applied Mathematics of China Academy of Sciences; 1999.7-200 1.6 was a postdoctoral fellow of Professor Qian Min Ping in Peking University Institute of Mathematical Sciences. In June of 20001year, the postdoctoral fellow left the station and entered the School of Mathematics and Computer Science of Hunan Normal University. In March 2007, he transferred to Nankai University. Selected into the Ministry of Education's 2005 New Century Excellent Talents Support Program. Now he is a professor and doctoral supervisor at the School of Mathematical Sciences of Xiangtan University.