The transition of development from high-speed stage to high-quality stage is the evolution of national economic development system. It involves the transformation of a series of development elements, such as the essence of development, development targets, development methods, and so on. It will profoundly affect the main bodies, departments and regions of economic operation. Therefore, it is an important task for Chinese economists to continuously, systematically and empirically study the characteristics, influencing factors, and actual performance of China's economy entering the high-quality development stage, as well as relevant improvements and promotion policies.
