What is silence?

Silence is a black dog, which is a disparaging term for foreign blacks who violate the rules and commit crimes in China.

Black race, also known as black race, black Australian race, equatorial race and Congolese race. It is a theory of human classification, which divides people according to the heritable traits in constitution. Black people generally have dark skin, wavy or curly hair, wide and flat nose, low or medium nasal root, small nasal process, large nostril diameter, lip process, wide mouth, thick lips and less beard and body hair.

The racial classification of blacks mainly includes nilot, Bantu (both of which account for the vast majority of African black population) and Hermite. Mainly distributed in Africa, North America, South America and Europe. Although Australian aborigines also have black skin color, they are divided into brown people in demography. The native place of black people is sub-Saharan Africa. Black people in America and Europe are mainly descendants of slaves in colonial period and black immigrants after World War II.

Theoretical source:

The earliest racial classification is the mural painting of the tomb of Siti I of the 18th dynasty in ancient Egypt more than 3,000 years ago. It uses different colors to distinguish human beings and divides human beings into four categories. Black people in the south were painted black, the other three were painted red by Egyptians, yellow by Asians and white by westerners and northerners.

It became the basis for later dividing human beings into four types: white, yellow, black and brown. According to the classification made by the Swedish scientist Linnaeus in 1758, the four major races, African blacks and European whites, Asian yellow races and American red races, are classified as rational races.

178 1 year, German anatomist John F. Blumenbach made a more systematic division according to the results of skull measurement research, and divided all mankind into five major races: Caucasian, yellow race, Mongolian, brown race and Malay.

19th century 1870, the British biologist Huxley put forward a new classification, which divided human beings into four major races: black, Australian, Mongolian and Caucasian. At about the same time, there were six-point method put forward by French scholar Buffon, eight-point method put forward by Japanese scholar Yokoyama Matjiro, and three-point method put forward by broca, Ju Ye Wei and Hatton.

In 20th century 1946, American anthropologist Hutton put forward systematic classification. He believes that all mankind can be divided into three races at the first level, black race, Mongolian race and Caucasian race. Each adult race includes several branches, and branches include several regional ethnic types.