What's the difference between the faces of different provinces in China?

In fact, there is not much difference in face shape between provinces, but there is a certain gap between people from north and south. For example, people in the north of the Yangtze River are mostly square faces, while people in some parts of Inner Mongolia are mostly round faces and small eyes, which is a typical Mongolian national feature, while people in Guangdong, Guangxi and Guizhou have slender faces or short eyes and sunken foreheads, while people in Jiangnan and Fujian have short round faces in the middle. However, due to the frequent migration of China people from north to south, for example, during the Tang and Song Dynasties, Cantonese people were all immigrants from the north, and Baiyue in Guizhou was descended from hundreds of thousands of soldiers of the Daqin Empire, so many faces in the population of various provinces have no characteristics, and most of them are already mixed-race faces!