On 14 February 2023, CNERC-Rail visited Prof. Chih-Yung WEN’s MAV/UUV laboratory at the Department of Aeronautical and Aviation Engineering (AAE), the Hong Kong Polytechnic University. Prof. WEN and MAV/UUV team members warmly welcomed our visit, and introduced the MAV/UUV research work. They also gave a wonderful demo to show how the MAV/UUV works. At the end, CNERC-Rail members discussed with Prof. WEN for the application of robotics technologies (i.e., MAV/UUV) for civil infrastructure inspection for further collaboration.