Weidong Liu earned his Ph.D from Zhejiang University in 2008. During 2008-2009, he was a postdoctoral fellow in Hong Kong University of Science and Technology. After finishing postodoctoral research at HKUST, he joined Wharton School in University of Pennsylvania as a postdoctoral fellow. In 2011, he joined Shanghai Jiao Tong University. Weidong Liu has been awarded by National Excellent Doctoral Dissertation Award from China and New World Mathematics Awards, Silver Award for the Ph.D Thesis in 2010. His research interests are focused on statistics and probability. In high dimensional statistical inference, Weidong Liu and coauthors developed several new methods on the estimation of high dimensional covariance matrix/inverse matrix. In time series analysis and nonparametric estimation, he and coauthors had made important progress in several long-standing opening problems. Many of his research results were published in the top journals such as JASA、Ann.Stat.、Biometrika, Ann. Appl.Probab. and Probab Theor Relat Field.