China people's double eyelid gene was introduced from other ethnic groups, because China has been dominated by single eyelids since ancient times. Through ancient portraits, we can know that ancient people regarded single eyelids as beautiful women. At that time, the Central Plains was dominated by Han people, and almost all Han people had single eyelids. However, because the state encourages ethnic integration, people from other ethnic groups will also flood into the Central Plains, such as Mongolians, Hui people and Xinjiang Uighurs. The eyes of these ethnic minorities are dominated by double eyelids, so children born after the combination of ethnic minorities and Han people will have double eyelids, so the double eyelid gene of China people was introduced from other ethnic groups.

Since the Qin dynasty, after Qin Shihuang unified the six countries, it has been implemented? Cars on the same track, books in the same language? At that time, China had a vast territory. Because China is unified, people from different regions exchange needed goods, so people from all ethnic groups can also achieve integration. Since then, the double eyelid gene has also entered the world of Han people. Then came the reform of Emperor Xiaowen in the Northern Wei Dynasty. Emperor Xiaowen of the Northern Wei Dynasty was the ruler of Xianbei nationality. He pursued the policy of sinicization and actively encouraged ethnic integration. Xianbei nationality is a minority. What are the characteristics of Xianbei people? Double eyelids? With what? Big eyes? Therefore, after combining with the Han people, the children born will naturally have double eyelids. Moreover, double eyelids are also dominant genes, and single eyelids are recessive genes. Dominant genes and recessive genes are both dominant genes, so there will be more and more people with double eyelids, but few people with pure single eyelids.

Later, the Qing Dynasty entered the Central Plains. All the royal families in Qing Dynasty were Manchu, so were the characteristics in Manchu eyes? Double eyelids? With what? Big eyes? Moreover, the Qing dynasty also promoted the policy of sinicization and encouraged ethnic integration. Therefore, more and more foreigners enter the Central Plains and intermarry with the Han people in the Central Plains. Does the vision of the offspring born include? Double eyelids? Dominant gene When I was in college, I was the only one with a single eyelid among the six students in the dormitory, and all the other roommates had double eyelids. However, although I have a single eyelid, I just look like a single eyelid from the outside. I'm actually an inner double eyelid, and I can't tell if it's a double eyelid. It can be seen that the proportion of people with double eyelids in modern society is still very large.

China ancient single eyelid looks good, modern China double eyelid looks good, because many people with single eyelid want to cut it. In fact, whether it is a single eyelid or a double eyelid, each has its own characteristics and aesthetic feeling.