On 21 August 2023, Prof. Bao-Guo Han visited CNERC-Rail at The Hong Kong Polytechnic University to deliver an academic lecture entitled “Nano-engineered concrete for sustainable infrastructure”. Prof. Bao-Guo Han focused on sharing the understanding gained on the expansion of nanoengineered concrete properties and the validation of civil, transport, municipal and marine infrastructure applications. Prof. Yi-Qing Ni (Director of CNERC-Rail), Dr. Zheng-Wei Chen (Research Assistant Professor), Dr. Wai Kei Ao (Research Assistant Professor), and other members of the center, attended the lecture. After the lecture, Dr. Mohammad and Dr. Jiang Gaofeng had an in-depth and comprehensive discussion with Prof. Han on some of the technical details of interest and accompanied him on his visit to Hong Kong.