On 2 March 2023 morning, Professor Christopher Chao, vice-president (Research and Innovation) of the Hong Kong Polytechnic University (PolyU), led a delegation to visit the Joint Innovation Center for Rail Transit Safety Monitoring Technology. This joint center is established by the PolyU Base (Shenzhen) Limited, and the China Southwest Jiaotong University Railway Development Co., Ltd (CSRD). Members of the center, including Dr. You-wu Wang, Mr. Xin Ye, Mr. Xiang-xiong Li, and Mr. Guang Zhou, briefed Professor Chao ongoing research projects carried out by the center and the use of equipment in the laboratory.