Dr. Siqi Ding is a Research Assistant Professor in the Department of Civil and Environmental Engineering at The Hong Kong Polytechnic University, Hong Kong, China. He obtained his PhD in Structural Engineering from The Hong Kong Polytechnic University in 2021, under the supervision of Prof. Yi-Qing Ni. He has extensive experience in structural health monitoring and has contributed to the development of multifunctional concrete for smart structures. Currently, his research interests include nano-engineered multifunctional/sustainable cementitious composites for smart infrastructure, machine learning-aided design of acoustic metamaterial for noise monitoring and mitigation in smart rail system. Dr. Ding has authored and co-authored 2 English books published by Springer, 5 English book chapters, and over 40 peer-reviewed papers in renowned journals. His Google Scholar gives a total citation over 2,490 with an H-Index of 20.