Group 1 - Erhai Lake is a crucial natural reserve and drinking water source for Dali City, Yunnan Province, playing multiple roles in ecological protection, tourism, urban water supply, climate regulation, and biodiversity maintenance [1] - The protection of Erhai Lake is a complex and systematic project requiring the participation of government, enterprises, and the public, emphasizing the need for diverse stakeholders including green enterprises, environmental organizations, and research institutions [1] Group 2 - The Dali government has implemented various protective measures such as "Three Retirements and Three Returns," "Six Major Projects," "Seven Major Actions," and "Eight Major Battles," leading to improvements in water quality and ecological environment around Erhai Lake [2] - A local environmental technology company focuses on ecological protection and resource recycling, processing nearly 2000 tons of organic waste daily, which contributes significantly to the protection of Erhai Lake and increases income for surrounding farmers [2] Group 3 - Local communities around Erhai Lake actively participate in its protection by establishing rules and regulations through cultural practices, ensuring sustainable fishing and resource use [3] - The community enforces traditional practices such as prohibiting the use of small fishing nets and toxic methods, which helps maintain the ecological balance and supports the lake's recovery [3] Group 4 - Comprehensive ecological protection efforts have led to the gradual restoration of the Erhai Lake ecosystem, highlighting the interdependence between humans and lakes, and the importance of nurturing nature for sustainable ecological benefits [4]

Core Viewpoint - The article highlights the growing popularity of Tian'e County as a tourist destination, particularly for its unique experience of interacting with blue knife fish in the clear waters of the Hongshui River, driven by ecological improvements and community efforts in conservation [9][11][13]. Group 1: Tourism and Visitor Experience - Tian'e County has seen a surge in visitors, with 170,000 tourists feeding fish during the recent "May Day" holiday, matching the county's permanent population [9]. - Tourists are drawn to the clear blue waters and the friendly fish, creating memorable experiences, as expressed by visitors from various regions [7][8]. - The local swimming association has played a significant role in fostering a relationship between the fish and visitors through regular feeding activities [14]. Group 2: Ecological Improvements - The transformation of the Hongshui River's water quality from red to blue began with the construction of the Longtan Hydropower Station in 2006, which has contributed to the current ecological landscape [10][11]. - The local government has implemented measures to protect the fish population, including a comprehensive monitoring plan and the establishment of designated fishing protection zones [16][17]. Group 3: Economic Impact - The influx of tourists has significantly boosted local businesses, including restaurants and accommodations, with over 200 households benefiting from tourism-related activities such as homestays and fish fry farming [19]. - The shift from traditional fishing to eco-tourism has led to increased incomes for local residents, as exemplified by individuals transitioning to paddleboard rental and other tourism services [19].