I was a Ph.D. student in Computer Science Department, advised by Professor Christos Faloutsos, and affiliated to the Databases Group. I left Carnegie Mellon in June 2011 to be a software engineer with Facebook. I got my M.S. in May 2008 from Carnegie Mellon University, Pittsburgh, PA; I received my B.E. in July 2005 from Department of Computer Science and Technology at Tsinghua Unversity, Beijing, China. I was born in the historic city of Hanzhong. I grew up in the city of Ankang and spent my high school years in Xi'an.