“…The high coupling coordination group includes five provinces: Shanghai, Beijing, Zhejiang, Jiangsu, and Tianjin; the moderate coupling coordination group includes 12 provinces: Xinjiang, Sichuan, Hunan, Inner Mongolia, Anhui, Jiangxi, Hebei, Liaoning, Chongqing, Shandong, Fujian, and Guangdong; the low coupling coordination group includes 14 provinces: Qinghai, Xizang, Guangxi, Guizhou, Yunnan, Gansu, Hainan, Heilongjiang, Ningxia, Shaanxi, Henan, Shanxi, Jilin, and Hubei. The spatial distribution echoes the research on RII [9,10] and NU [43].…”