Core Viewpoint - The restoration and ecological improvement of Chagan Lake have significantly enhanced its tourism appeal and local economy, leading to a better quality of life for the residents [2][3]. Group 1: Ecological Restoration - The "River-Lake Connectivity" project initiated in 2013 has revitalized Chagan Lake's ecosystem, increasing its water area and improving water quality [2]. - The introduction of aquatic plants and the return of rare bird species indicate a positive ecological trend in the area [2]. Group 2: Economic Development - The natural beauty and cultural significance of Chagan Lake have attracted a growing number of tourists, boosting local industries such as dining and accommodation [3]. - The community has experienced improved living conditions, reflected in the saying "year after year there are fish, year after year there is surplus" [3]. Group 3: Community Engagement - The local population has become increasingly aware of the importance of protecting the ecological environment, engaging in activities like litter collection and wildlife rescue [3]. - There is a collective effort among residents to maintain the ecological integrity of Chagan Lake, which is viewed as a valuable resource [3].

Core Viewpoint - The restoration of the Erlongtao River has led to a significant revival of the local ecosystem, particularly benefiting migratory birds like the white crane, and fostering community involvement in environmental protection efforts [1][2]. Group 1: Environmental Restoration - The Erlongtao River, which had dried up due to drought and dam construction over 20 years ago, began to recover in 2014 with the implementation of river-lake connectivity projects [1]. - The influx of clean water from the Nenjiang and Taoer Rivers has rejuvenated the wetlands, allowing vegetation to regrow and attracting migratory birds back to the area [1]. Group 2: Community Involvement - A volunteer team, the Wildlife Protection Association of Jilin Baicheng, was established to monitor and protect the local bird population, conducting various activities throughout the year [2]. - The efforts of volunteers have resulted in the rescue of injured protected bird species and the documentation of hundreds of thousands of bird images, indicating a growing commitment to environmental stewardship [2]. Group 3: Ecological Impact - The presence of migratory birds serves as an indicator of the river's ecological health, with increasing numbers of white cranes and the return of previously absent species like the tufted duck [2]. - The revitalization of the river has not only improved the local ecosystem but has also enhanced the quality of life for residents, contributing to economic opportunities such as eco-tourism and agriculture [4].