On 5-7 September 2023, Prof. Xue-Song Jin's team visited CNERC-Rail at the Hong Kong Polytechnic University and delivered seven lectures on research related to the control of wheel and rail wear on high-speed railways in China. Prof. Yi-Qing Ni (Director of CNERC-Rail), Dr. Zheng-Wei Chen (Research Assistant Professor), Dr. Wai-Kei Ao (Research Assistant Professor), Dr. Su-Mei Wang (Research Assistant Professor), Dr. You-Wu Wang (Research Assistant Professor), Dr. Hong-Wei Li (Research Assistant Professor) and other members of the center, attended the lecture. After the lecture, Prof Yi-Qing Ni, Dr Zheng-Wei Chen and others had an in-depth discussion with Prof Xue-Song Jin's team on some technical details and future research directions and had dinner together.