From February 14 to 16, 2023, members of the Hong Kong Branch of the CNERC-Rail (Dr. Wei Jiang and Mr. Zheng-Xin Che), member of Hong Kong-Zhuhai-Macao Bridge Authority (Mr. Qing-Fa Wu) and member of Hong Kong Polytechnic University (Mr. Jun-Jie Zhang) went to the exposure test station of Hong Kong-Zhuhai-Macao Bridge for on-site experiment. Under the strict management of the bridge site infrastructure by Hong Kong-Zhuhai-Macao Bridge Authority, center members installed temperature-humidity sensors and transmitted the monitoring data to the cloud hard disk.