On 26 April, the third park city forum and the sixth International High-level Forum on Sustainable Urban Development were held in all. In the park City Forum sub-forum, the Honourable Zhao, Deputy Professor of the University of Chianghua, published the “Persons and Natural Harmony Index” in the potato National Park. Harmonious index value 0.81, both above average The Human and Natural Harmony Index is used to quantify the extent to which human beings live in harmony with nature and to refer t...