firstly, we should consider the consumption level there; secondly, we should consider the geographical and transportation factors. Ningxia lives in the western inland of China, which is inconvenient to transport; thirdly, we must have made a survey of all regions in China before McDonald's chose to build a store. In the process of investigation, they will learn about the cultures and consumer preferences of various regions, and perhaps the people of Ningxia do not approve of McDonald's.