On 12 November 2021, the unveiling ceremony of the Qingdao-Hong Kong Marine Environment and Ecology Joint Research Centre (Joint Centre) was successfully held simultaneously in Qingdao and Hong Kong via a hybrid format. We were honoured to have Prof. Michael Chi Kong Tse, Associate Vice-President of City University of Hong Kong (CityU), Prof. Kenneth Mei Yee Leung, Director of the State Key Laboratory of Marine Pollution, Jianmin Wang, Vice President for Financial Affairs of Ocean University of China (OUC),and Prof. Meixun Zhao, Director of the Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, as the officiating guests of the unveiling ceremony. The Joint Centre was established by CityU and the OUC for knowledge exchange, research collaboration, and nurturing young scientists in the field of marine science and related expertise.