With the increasingly close relations between cities in China. it is of great significance to explore the regular characteristics of the intercity connection. Through Tencent’s population migration heat and Baidu map big data. this paper analyzes the regular characteristics of the relations between complex cities based on such index as the rich node propensity index. https://safeersappliancers.shop/product-category/belling-kensington-90-cm-electric-induction-range-cooker-red-chrome-444444051/