How are races divided?

Known as "the originator of western anthropology" and "the father of mankind", Professor Brumenmacher of the University of G? ttingen in Germany first made scientific classification. According to the physical characteristics such as skin color, hair color and hairstyle, eyes, height and head shape, and the original living area, he divided the living human beings into five major races: ① Caucasian race (white). The skin is white, the hair is chestnut, the head is almost spherical, the face is oval and vertical, and the nose is very narrow. Residents of Europe, West Asia and North Africa all belong to it, except Finns and Laplanders. ② Mongolian race (yellow race). Yellow skin, straight black hair, square head, flat face, small nose, protruding cheekbones and narrow eyes. Asians outside West Asia and Inuit, Lapland and Finns in the north all belong to it, but not Malays. (3) African race (black). Black skin, black and curved hair, long and narrow head, prominent cheekbones, prominent eyeballs, thick nose and thick lips, and most people have splayed feet. Except for northern Africans, all other Africans belong to it. (4) American race (red race). The skin is copper, the hair is black and straight, the eyeball is sunken, the nose is tall and wide, and the cheekbones are prominent. Except Inuit, other Native Americans belong to it. ⑤ Malay race (brown race). Yellow-brown skin, dark and atrophic hair, medium narrow head, wide nose and big mouth. The inhabitants of Pacific islands and Malay Peninsula belong to it. This division can be said to be the geographical classification of ethnic groups. In fact, there are no red people in America. Indians are a big branch of the yellow race. Because of their reverence for red, they often paint their faces with red paint and are mistaken for red people. Moreover, the blood characteristics, genetic diseases and genetic genes of different races are different, so scholars have different standards for the division of races. Therefore, there is no consensus on the classification of modern races. However, after 1950s, fingerprints, blood types and other indicators were added on the basis of Brucella classification, and the racial classification was gradually combined with modern science, gradually forming the currently recognized racial classification standard.