CECA, or CrossBorder Environment Concern Association, is a grassroots think tank that focuses on advocating ecological policies along the Chinese coast. Their main objectives include actively participating in the planning processes of the Greater Bay Area and national coastal areas to prevent or improve projects with significant environmental impacts. CECA also aims to establish a comprehensive ocean planning database, conduct forward-looking research, and provide consultancy services, workshops, and training to elevate the level of social organization services in coastal regions.

Through their regional influence, CECA strives to enhance positive interactions between government agencies and the public in coastal planning and promote policy advocacy. In addition to their policy advocacy efforts, CECA conducts in-depth research on environmental impact assessment reports, urban planning, and legal regulations. They are committed to increasing public engagement in environmental issues and actively welcome new members to join their cause in protecting migratory birds, mangroves, and nature as a whole