He received his Master and Ph.D. degrees from Tsinghua University in 2003 and 2006 respectively, and he has been working in Tsinghua University since 2009 after three-year work in industry. His current research focuses on studying the measurement and evaluation tools and methodologies for the user experience in HCI with a quantitative manner. Current achievements on the methodology and measuring sensors have shown it promising. He is also leading a group working with clinical professionals in China to serve the citizens in both rural areas and cities to improve their health management. He served as demo chair in UbiComp 2011 and local chair in Healthcom 2012.