Master of Economics, professor in the School of Statistics at Renmin University of China, PhD tutor, member of the academy of the National Bureau of Statistics, executive director of the Statistics Education Society of China, member of the Science and Technology Committee of the China National Institute of Standardisation, consultant to the Development and Reform Advisory Committee of the National Tourism Administration, member of the expert panel of the State Council Committee to Promote Market Fairness, consultant to the State Council Three Gorges Resettlement Project Committee, and member of the expert panel of the State Council Economic Census Committee. His research direction is applied statistics, covering fields such as survey design and statistical analysis. He has published many papers in magazines such as Management World and Statistical Research, and numerous textbooks, including Introduction to Statistics, Sampling Theory and Applications, and Multivariate Statistical Analysis. He has completed dozens of projects, including major social-sciences projects, and is editor-in-chief of the OUC Statistics course and compiler of the textbook Principles of Statistics.