The so-called "impure blood of Han people" comes from the beginning of this century, and BBS, an online community, appeared in China, such as Xici, Ship Knowledge Forum and Tianya Community.

Some ideas to strengthen the theory of extreme racial identity? In these forums, criminals spread "impure Han descent", "various loanwords in Chinese" and "moral defects of Confucian civilization"? Hide evil intentions? These words.

Were you online? People of insight have published many articles, calling on China netizens not to feel inferior, not to be self-righteous, and to see the splendid and tolerant side of Chinese civilization.

Professor AARON Li from the Center for Modern Anthropology of Fudan University is an expert on the origin and evolution of people and languages in East Asia and the evolution of unique genes in East Asia. His research results show that no nation in the world is pure, as shown in the following figure:

In this picture, we can see that the paternal lineage of the Han nationality in all ethnic groups is highly unified and pure, with pictures and truth. Professor AARON Li clearly pointed out in a paper about the origin of China people? The simplicity of Han descent:

More than 200,000 years ago, modern people originated from Africa's Homo sapiens Rhodesia, and some groups went out of Africa 70,000 years ago and evolved into eight major races in the world. Four of them arrived in China successively, and through uneven mixing, different groups of modern China people were formed. Although the Han nationality has a large population, its pedigree is relatively single. Through the pedigree analysis of paternal Y chromosome, it is found that most of the lineal lineages of Han nationality come from ancient legends.

The above evidence is enough to show that the statement that the Han nationality is impure is wrong and untenable.

Let's talk about why Han people look different. In ancient China, there was no distinction of ethnic origin. Before the Song Dynasty, China was only divided by culture, including Huaxia, Dongyi, Xirong, Beidi and Nanman. During the prosperous Tang Dynasty, the Li Shimin family also had the lineage of Hu people, which was still the orthodox Han culture in China.

Different looks are also related to many factors such as environment, climate and altitude. First of all, let's talk about face, facial features and body shape. For example, northerners have high noses because of the high latitude in the north? When the temperature is low, the nose must have a long and narrow nasal passage to warm and moisten the air in order to adapt to the temperature. The temperature in the south is basically constant all year round, so there is no need for this process, so there is no need for a straight nose.

Height is generally higher in the north and lower in the south, because there are a few Tungusic C series in the genes of northerners, and o 1 Baiyue, Miao Yao and O2a Baipu in the genes of southerners. The subtle differences of these genes determine the height difference between the north and the south.

Let's talk about skin color. We can see that people in high altitude areas such as Tibet and Yunnan have obviously darker skin, and so do subtropical areas such as Hainan and Guangdong. The environment in Jiangsu and Zhejiang is humid, the sunshine is not so strong, and the skin color of people in this area is obviously white. In some transitional areas, the characteristics of north and south types may appear at the same time.

To sum up, within the same race, bloodline is not the main factor affecting appearance, but latitude is the first factor affecting appearance, which is the most critical.