Geographical distribution of public-health resources. Note: (1) (a,b) respectively show the geographical distribution of health personnel in 2008 and 2018. And the health personnel is measured by the quantity of health personnel per thousand square kilometers per million people, namely “health personnel/ (thousand kilometers2• million people)”. (2) (c,d) respectively show the geographical distribution of medical and health institution in 2008 and 2018. The medical and health institution is measured by the quantity of medical and health institution per thousand square kilometers per million people, namely “medical and health institution/ (thousand kilometers2• million people)”. (3) The darker the blue, the more abundant the public-health resources in that area. (4) These figures above are made by the authors, and there is no copyright issue.