It should be noted here that the great wars in the last years of the Eastern Han Dynasty all took place in the Central Plains, and most of the people who lost their population were Han Chinese. On the one hand, the population of Han nationality in the Central Plains has dropped sharply, on the other hand, the northern minorities have moved in on a large scale, and the ethnic structure has also undergone tremendous changes. The Han nationality, which once had an absolute advantage in population proportion, was gradually overtaken by ethnic minorities. In 299 AD, Jiang Tong said in his book Migration to Rong: "There are more than 8 million people in Guanzhong, the rate is much less, and Rong Di lives in half." The number of ethnic minorities here alone has reached 25% of the population, which shows its large number. Under this historical background, different nationalities began to merge gradually, but this process was far from smooth and smooth as expected. Now let's get back to the topic and continue to talk about martial arts. Based on the physical gap, the author thinks that northern Wushu is in a strong position for a long time. To see this point of view, please remove the concept of qigong from martial arts novels. Of course, Qigong exists, but it can never offset the physical gap, and its function is far less obvious than the physical advantage.
Because of the cold living environment, northerners are taller, longer legs, stronger and more powerful than southerners, and their martial arts also highlight these characteristics. Boxing, for example, is often smashed, collapsed and rushed, and it also emphasizes throwing, rushing and bumping. These skills are based on strength advantage. As for the application and skills of leg technique, the Southern School is far behind. It is true that there are physical differences, but the above statement about integration is purely fallacious, ignoring the huge population base of the Han nationality. Hundreds of thousands of nomadic people on the grassland can't compare with the Han nationality with a population of tens of millions. It is entirely possible that the alien lineage will disappear like ink dripping into a pond, and there will be a phenomenon of "gene collapse". Even in the period of "five wild flowers", the Han nationality still had a huge population advantage, and the ancients did not have family planning.
Published in the British journal Nature, the paper "Genetic Evidence Supported the Demic Diversity of Han Culture" points out that:
"The Y chromosome types and frequency distributions of the southern Han nationality and the northern Han nationality are very similar, indicating that the southern Han nationality is very similar to the northern Han nationality on the paternal line and is little influenced by the southern natives." The patrilineal heritability of Han nationality in North and South China is even higher than that of many minority nationalities, which is rare in the internal distribution of Y chromosome of any single nationality in the world. Undeniably, the North and South Han people are of the same ancestry, and the blood relationship within the Han people is even stronger than the cultural ties, which is also an amazing discovery.
To sum up, numerous studies have proved that the lineage of the Han nationality is still highly unified, and there is no so-called "foreign hybrid".
Closer to home, the difference in height and figure between the north and the south mainly comes from the following points: the most direct way for animals to adapt to the cold environment is to reduce heat conduction.
With the increase of individual animals, the relative body surface area becomes smaller, so the relative heat dissipation per unit weight also becomes smaller. In other words, large animals are conducive to maintaining a constant body temperature in a low temperature environment because large animals dissipate less heat.
Bergman's Law: In cold climate areas, animals with high body temperature tend to be larger, and in mild climate conditions, their bodies tend to be smaller. For example, the skull of the Northeast Tiger is 33 1 ~ 345 mm long, while that of the South China Tiger is only 283~3 18 mm long. Low temperature environment may delay the growth of animals, but because sexual maturity is also delayed, animals may eventually grow bigger and live longer. There is an obvious example: mice and rats growing up in cold storage are larger than those living in general greenhouses or fields, and their fertility is often higher in cold environments. Therefore, with the same ancestor, the northern Han people had to evolve a larger and taller body than the southern Han people in order to adapt to the colder environment. If the southern Han people have the body of the northern Han people, they will not adapt to the local warm climate. This is an evolutionary choice, but it does not conflict with sharing the same paternal Y gene and having the same blood relationship.