Hefei lies to the south of Huaihe River. According to the standard of dividing the Qinling Mountains and Huaihe River into north and south, Hefei belongs to the category of southern cities in theory. In addition, the climatic conditions in Hefei are also in line with the characteristics of southern cities. Hefei belongs to subtropical monsoon climate, with four distinct seasons, more annual precipitation and rainy season, which is a typical manifestation of the southern climate. In addition, Hefei's eating habits are similar to those of southern cities, with rice as the main food and less pasta. The above conclusions are based on geographical location, climatic conditions, eating habits and other objective facts.