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]