Hongda Liu is currently pursuing the Ph.D. degree with New Laboratory of Pattern Recognition (NLPR), State Key Laboratory of Multimodal Artificial Intelligence Systems (MAIS), Institute of Automation, Chinese Academy of Sciences (CASIA), China. He received the B.S. degree in college of computer science and technology, Jilin University, China, in 2020. His research focuses on biometrics, computer vision, and deep learning.