He emphasized the need to fully, accurately, and comprehensively implement the new development concept, adhere to joint efforts in major protection and not large-scale development, prioritize ecology and green development, take scientific and technological innovation as the guide, coordinate the promotion of ecological environment protection and economic and social development, strengthen policy and work coordination, seek long-term trends, implement long-term strategies, and build a foundation for long-term security, and further promote the high-quality development of the Yangtze River Economic Belt, Better support and serve Chinese path to modernization. Li Qiang, member of the Standing Committee of the Political Bureau of the Communist Party of China Central Committee and Premier of the State Council, Cai Qi, member of the Standing Committee of the Political Bureau of the Communist Party of China Central Committee and Director of the General Office of the Central Committee, and Ding Xuexiang, member of the Standing Committee of the Political Bureau of the Communist Party of China Central Committee and Vice Premier of the State Council, attended the symposium. At the symposium, Zheng Zhajie, Director of the National Development and Reform Commission, Yuan Jiajun, Secretary of the Chongqing Municipal Party Committee, Yin Hong, Secretary of the Jiangxi Provincial Party Committee, and Chen Jining, Secretary of the Shanghai Municipal Party Committee, delivered speeches successively, reporting on the work situation and proposing opinions and suggestions on promoting the high-quality development of the Yangtze River Economic Belt. The main responsible comrades from other provinces who participated in the symposium submitted written speeches. He emphasized that in the past 8 years since the implementation of the development strategy of the Yangtze River Economic Belt, provinces and cities along the river, as well as relevant central departments, have conscientiously implemented the decisions and deployments of the Party Central Committee, adhered to joint efforts in major protection and development, prioritized ecology and green development, solidly promoted the protection and restoration of the Yangtze River ecological environment, and actively promoted the comprehensive green transformation of economic and social development. With unprecedented determination and strength, the development of the Yangtze River Economic Belt has undergone significant changes. There has been a significant change in ideological understanding, and it has become a consensus to jointly focus on major protection and not engage in major development; Significant achievements have been made in ecological environment protection and restoration, and the beautiful scenery of "one river flowing eastward" has reappeared; Significant changes have taken place in the development mode, and innovation driven development is gaining momentum comprehensively; Significant improvement has been achieved in regional integration, and regional collaboration and linkage have been continuously strengthened; Significant progress has been made in reform and opening up, and the trend of comprehensive opening up to the outside world has accelerated. Overall, the achievements in the development of the Yangtze River Economic Belt are evident to all, the quality of development has steadily improved, and the development trend is gradually improving. At the same time, it should also be noted that the ecological environment protection and high-quality development of the Yangtze River Basin are in a critical period of transformation from quantitative to qualitative, and the achievements are not yet stable. Objectively, there are also many difficulties and problems that need to be further addressed. We must unwaveringly adhere to the principle of jointly focusing on large-scale protection and not engaging in large-scale development, and make greater efforts in high-level protection. The ecological red lines along the Yangtze River have been defined, and it is necessary to maintain and manage them, strengthen the control of ecological environment zoning, and strictly implement the access list. Party committees and governments at all levels should have a clear understanding of the designated important local ecological spaces, prioritize and strictly protect them. We need to continue to strengthen comprehensive ecological and environmental governance, continuously strengthen pollution control in key areas, coordinate water resources, water environment, and water ecology, solidly promote the prevention and control of atmospheric and soil pollution, pay more attention to front-end pollution control, and reduce pollutant emissions from the source