Hang Zhou is an expert in the fields of 3D vision and graphics. He is currently a Postdoc Fellow at Gr UVi, School of Computer Science, Simon Fraser University, Canada. He has received the best paper award of IJCAI workshop on safety and security of deep learning in 2021, outstanding doctoral dissertation of Chinese Academy of Sciences in 2020, the President Scholarship of Chinese Academy of Sciences in 2020 and Cyberspace Security Scholarship of China in 2018. Kejiang Chen is an expert in the fields of information hiding. He is currently an associate researcher at School of Cyberspace Science and Technology, University of Science and Technology of China. He has received the best student paper award of ACM workshop on Information Hiding and Multimedia Security in 2018, ACM SIGWEB CHINA outstanding doctoral dissertation in 2021 and Cyberspace Security Scholarship of China in 2019. He has published more than 30 papers about information hiding in journals andconferences. Zehua Ma is now a Ph.D. candidate in Information Process Center and Key Laboratory of Electromagnetic Space Information (Chinese Academy of Science), School of Information Science and Technology, University of Science and Technology of China. His research interests include image watermarking, image processing, and 3D printing. Feng Wang is now an engineer at Megvii. He graduated from University of Science and Technology of China with a master degree. His research interests include geometric analysis and computer vision.  Weiming Zhang is a leading expert in the fields of information hiding, multimedia security, and privacy-preserving data searching and analysis. He is currently a Professor at the in Information Process Center and Key Laboratory of Electromagnetic Space Information (Chinese Academy of Science), School of Information Science and Technology, University of Science and Technology of China. He has published more than 200 papers in journals and conferences including TIT, TIFS, TIP, TVCG, TCOMM, TDSC, CVPR, ICCV, AAAI, INFOCOM and ACM MM. He has receive the first prize of Anhui natural science and the special prize for teaching achievement.