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There are lack of indicator system and method to measure high-quality development. According to the new development concept and the system theory, we put forward that high-quality development system should be a system that not only realizes the development of subsystems at a high level but also achieves coordinated development among subsystems. Evaluation index system of China's high-quality development is established from the fi ve aspects such as innovation development, urban-rural coordination, ecological environment, opening to the outside world and people's livelihood. The improved G1 method based on grey correlation degree and coordination degree model based on bull's-eye distance are applied to analyze high-quality development level of China's 30 provinces in 2016. The results show that the high-quality development among provinces is imbalanced, and presents the obviously spatial pattern of east high and west low. Parts of provinces are in the high development but low coordination state, or in low development but high coordination state. Opening to the outside world and ecological environment subsystem are the weak spot of high-quality development system. Opening to the outside world subsystem is with the most imbalanced development, followed by innovation development subsystem.
Huang et al. (Tue,) studied this question.