Group 1 - The trend of declining natural coastline retention rate in Guangdong has been fundamentally reversed [1] - Guangdong has implemented a detailed classification and segmentation management system for coastlines, categorizing them into three types: strictly protected coastline (38.58%), restricted development coastline (29.03%), and optimized utilization coastline (32.38%) [1] - The province has established a coastline occupation and compensation system, achieving a historical compensation rate of 91.22% for coastline occupation [1] Group 2 - Guangdong has designated a marine ecological protection red line area of 16,600 square kilometers, accounting for 25.62% of the province's marine area [2] - The province has set up 125 levels of marine natural protected areas, covering 390,000 hectares, and has built approximately 11,400 hectares of mangrove forests, ranking among the top in the country [2]

Core Viewpoint - The implementation of the "Coastal Building Retreat Line Management Regulations" in Qinhuangdao City marks a significant step towards coastal line protection and spatial governance, providing a regulatory framework for delineating retreat lines and controlling coastal development activities [1][2]. Group 1: Regulations Overview - The regulations are based on principles of ecological priority, safety protection, strict control, and ease of management, covering aspects such as the background for formulation, delineation criteria, and responsibilities of local governments [1][2]. - The coastal building retreat line is defined as a boundary to protect coastal ecosystems, resist marine disasters, and expand coastal space, with a designated "avoidance zone" where construction activities are generally prohibited or restricted [1][2]. Group 2: Implementation Mechanism - The delineation of the retreat line will follow the latest surveyed coastline and will be organized by local governments, requiring approval from the municipal government before public implementation [2]. - A "list of permitted projects + classified management" mechanism is introduced, allowing nine types of projects in the avoidance zone, including major national and provincial projects, ecological protection, and necessary infrastructure [2]. Group 3: Existing Structures and Tourist Areas - Existing legal structures within the avoidance zone can be renovated but not expanded or raised, with any necessary reconstruction needing to comply with planning requirements [2]. - Tourist areas such as beaches must have necessary service facilities set up reasonably, with strict control over construction scale and aesthetics to ensure harmony with the marine environment [2]. Group 4: Future Directions - The establishment of the retreat line system aims to maintain ecological balance and environmental safety, addressing the conflict between development and protection, and preventing disorderly development of coastal resources [3]. - Qinhuangdao will expedite the delineation of retreat lines in coastal areas and improve management mechanisms to strengthen coastal ecological safety [3].