Core Viewpoint - The article highlights the successful ecological restoration efforts in Qinhuangdao, particularly in the Beidaihe area, showcasing the transformation of the coastal environment and its positive impact on tourism and local economy [4][10][15]. Group 1: Ecological Restoration Efforts - Beidaihe has a coastline of 23.04 kilometers with a natural retention rate of 90.8%, but it faced ecological crises due to rising sea levels, pollution, and erosion [4][5]. - Since 2016, the "Blue Bay" initiative has accelerated marine ecological protection and restoration, leading to a comprehensive ecological defense campaign [5][10]. - The restoration project from Jinwu to Qianshui Bay has repaired nearly 3.5 kilometers of coastline and restored over 100 hectares of coastal wetlands [8][10]. Group 2: Pollution Control Measures - Over 80% of marine pollution originates from land, with 80% of that from rivers, necessitating a focus on river pollution control [12]. - Intelligent water quality monitoring buoys have been deployed to monitor key indicators in major rivers, allowing for real-time data collection and rapid response to pollution [12][13]. - A comprehensive management system has been established for all major rivers and tributaries, utilizing advanced technologies for effective monitoring and management [12][13]. Group 3: Economic and Social Impact - The ecological improvements have led to a significant increase in water quality, with the proportion of Class I water quality in nearshore areas rising from 55% to 100% [15]. - The area has seen a rise in tourist numbers, with a year-on-year increase of 11.7% from January to July, driven by new tourism products and services [15][16]. - Local entrepreneurs are increasingly engaging in eco-friendly businesses, contributing to both economic growth and environmental sustainability [15][16].