Study on eco-environmental protection and construction of two-oriented society 并列题名：Study on eco-environmental protection and construction of two-oriented society China's report on eco-environmental protection and restoration of the Yangtze river economic belt China's report on eco-environmental protection and restoration of the Yangtze River economic belt Progress report on eco-environmental protection and restoration of the Yangtze River economic belt 并列题名：China's report on eco-environmental protection and restoration of the Yangtze River economic belt Marx, Engels and Lenin's thought on the construction of socialist society