What is the standard of livable city?

It consists of seven first-level indicators, four or eight second-level indicators and seven or four third-level indicators, including ecological environment health index, urban safety index, life convenience index, life comfort index, economic prosperity index, social civilization index and urban reputation index. Livable city refers to the comprehensive evaluation of the livable degree of the city. Livable cities are characterized by beautiful environment, social security, civilized progress, comfortable life, harmonious economy and high reputation. Livable city construction is the product of the city's development to the post-industrial stage, which refers to the residence with strong livability, good living and spatial environment, humanistic and social environment, ecological and natural environment and clean and efficient production environment. 1996 The second UN Habitat Conference put forward the concept that cities should be livable. Once this concept was put forward, it formed a wide range of knowledge in the world and became a new city view in 2 1 century. In 2005, the concept of "livable city" first appeared in the master plan of Beijing approved by the State Council. China Urban Competitiveness Research Association has published the list of "Top Ten Livable Cities in China" for many years. "Livable city" refers to those cities with high social civilization, rich economy, beautiful environment, strong resource carrying capacity, low living cost, good public security, comprehensive livability index above 80 and no negative conditions. Cities with a comprehensive livability index of more than 60 and less than 80 are called "livable cities". Cities with a comprehensive livability index below 60 are called "livable early warning cities".