Yingyi Qian is the Distinguished Professor of Arts, Humanities and Social Sciences at Tsinghua University, and Former Dean (2006-2018), School of Economics and Management, Tsinghua University. Professor Qian was born in Beijing and graduated from Tsinghua University in Mathematics. He received his Ph.D. in Economics from Harvard Universityafter earning an M.Phil. in Management Science/Operations Research from Yale University and an M.A. in Statistics from Columbia University. He was on the economics facultiesat Stanford University, the University of Maryland, and the University of California, Berkeley. He was the Dean of the School of Economics and Management at Tsinghua University in 2006-2018. Professor Qian was elected as Fellow of the Econometric Society in 2012 and as inaugural Distinguished Professor of Arts, Humanities and Social Sciences at Tsinghua University in 2018. He was a recipient of the 2009 Sun Yefang Prize in Economic Sciencesand the inaugural 2016 China Economics Prize. His main research areas include comparative economics, institutional economics, economics of transition and the Chinese economy. Professor Qian is the author of the book How Reform Worked in China: The Transition from Plan to Market(The MIT Press, 2017) and has published articles in international journals such as TheAmerican Economic Review, Journal of Political Economy, The Quarterly Journal of Economics,andThe Review of Economic Studies.