Chao-Hsien Hsieh received the B.S. degree in Industrial Engineering from YuanZe University, Taoyuan, Taiwan, in 1996, and the M.S. degree in Computer Science from Oklahoma City University, Oklahoma City, in 2001, respectively. After many years in R&D working experiences, he received the Ph.D. degree with the Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan, in 2015. He is currently an Associate Professor with the School of Cyber Science and Engineering, Qufu Normal University, Qufu, Shandong, China. His research interests include the cloud computing, blockchain, and database.