Core Viewpoint - The latest assessment report on the comprehensive competitiveness of ocean cities indicates that Shanghai and Hong Kong rank among the top ten global ocean cities, with Shenzhen and Qingdao also making it into the top 20 [3][4]. Group 1: Global Ocean City Competitiveness - The report evaluates 60 global ocean cities based on five dimensions: economic vitality, technological innovation, maritime services, international influence, and urban governance [4]. - The global ocean city competitiveness shows a clear distribution into four tiers, with London, Singapore, and New York leading the first tier as benchmarks for development [4][6]. - The second tier includes cities like Shenzhen, Houston, and Copenhagen, while the third tier consists of cities such as Helsinki and Osaka, and the fourth tier includes cities with weaker foundations like Dongguan and Ho Chi Minh City [6][7]. Group 2: China's Ocean Cities - China has 16 cities in the second and third tiers, representing over half of the total, highlighting the significant "Chinese power" in global ocean competition [7]. - Shanghai, Shenzhen, and Qingdao are identified as the three leading "ocean economic circle leaders" in China, with Shanghai ranking second globally in economic vitality and having the highest port cargo throughput [7]. - Shenzhen ranks fourth globally in technological innovation, supporting its ambition to become a "global ocean center city" through advancements in marine electronics and underwater robotics [7]. Group 3: Future Directions and Predictions - The report suggests a "four-dimensional enhancement path" for Chinese ocean cities, focusing on building an open economic ecosystem, becoming innovation hubs, deepening global governance participation, and innovating green low-carbon models [8]. - It predicts that from 2025 to 2030, technology-driven efficiency revolutions and green low-carbon transitions will dominate ocean city competition, with new business models like marine data centers and blue carbon economies emerging rapidly [8].