Core Viewpoint - The Yantai Maritime Safety Administration has successfully established 10 virtual AIS directional marks near the Miaodao Islands, marking a transition from passive management to intelligent early warning for navigation safety in restricted areas [1][2]. Group 1: Regulatory Developments - The establishment of virtual marks serves as a "safety sign" for the restricted navigation area, enhancing digital safety measures for maritime traffic [1]. - The Miaodao Islands have been designated as a restricted area since 1956, characterized by complex waterways and sensitive environments, necessitating improved navigation safety measures [1][2]. Group 2: Technological Innovations - The virtual marks allow nearby vessels to automatically identify information through radar and electronic charts, enabling early recognition and avoidance of restricted areas, thus significantly enhancing safety efficiency [2]. - The implementation of a dual-line warning system, with 5 virtual marks on both the eastern and western sides, creates an intelligent warning zone that integrates with existing physical navigation aids [2]. Group 3: Future Implications - The breakthrough in regulatory oversight for the Miaodao Islands is seen as a model for the integration of maritime safety and navigation support, contributing to national security and modern maritime governance [2]. - This "smart defense line" is expected to continuously safeguard traffic safety in the Bohai Strait, injecting new momentum into the construction of a strong transportation nation [2].