Rui Wang is a software engineer at Beijing Crystal Digital Technology Co. Ltd., and the manager of osgChina, the largest OSG discussion website in China. He is one of the most active members of the official OSG community, who contributes to the OSG project regularly. He translated Paul Martz's "OpenSceneGraph Quick Start Guide" into Chinese in 2008, and wrote his own Chinese book "OpenSceneGraph Design and Implementation" in 2009. And in 2010, he wrote the book "OpenSceneGraph 3.0 Beginner's Guide", which is published by Packt Publishing, along with Xuelei Qian. He is also a novel writer and guitar lover in his spare time.
Xuelei Qian received his Ph.D. degree in applied graphic computing from the University of Derby in 2005. From 2006 to 2008, he worked as a postdoctoral research fellow in the Dept. of Precision Instrument and Mechanology at Tsinghua University. Since 2008, he has been appointed by the School of Scientific Research and Development of Tsinghua University. He is also the Deputy Director of Overseas R&D Management Office of Tsinghua University and Deputy Secretary in General of University-Industry Cooperation Committee, Tsinghua University.