My surname is Xu, from Donghai County. I am Yan, my father is Liang and my grandfather is Lun. What is the history of my family?

Xu Ruomu. Bo Yi's son, Bo Yi, once assisted Dayu in water control, which made great contributions to the success of Yu's water control. Therefore, when he was rewarded for his merits, Bo Yi's son Ruomu was sealed to the ancient Xucheng and established Xuguo. When it reached Xu Yanwang, the 32nd emperor, he cared for the people and practiced benevolent policies. As a result, not only Xu, but also more than 3 vassal states around him were very supportive of him. At that time, Zhou Muwang ignored the state affairs and indulged in playing and hunting all day. Xu Yanwang started the idea of acting as the emperor for Zhou, and rebelled. Zhou Muwang, who was visiting the Queen Mother of the West, arrived back in time in Zao Fu's car. Seeing that he was about to declare war against each other, Xu Yanwang couldn't bear to sacrifice his soldiers, so he abandoned his country and ran away from the mountains in Pengcheng (now Xuzhou, Jiangsu). Because of his popularity, tens of thousands of people entered the mountains with him. The Emperor of Zhou was deeply touched to learn that Xu Yanwang was so popular, so he let the son of Yan Wang continue to govern Xu. Because if the wooden head seals Xu Guo, its descendants will take the country as their surname, called Xu, and Xu Ruomu will be the ancestor of Xu's surname.

Reproduction and Migration

In ancient times, the place where Ruomu was sealed by Xu was in the north of Fengyang County, Anhui Province today, which was the earliest birthplace of Xu's surname. Xu, who lived here, was already a big name when Xu perished. Later, they migrated to the north.

from the Xia dynasty to the early Qin dynasty, Xu's surname has been active in the jianghuai area of Anhui, Jiangsu, Henan and Shandong. In history, there was a Japanese ancestor Xu Fu, also called Xu Shi. There are many records in history about his crossing the sea to ask for the elixir of life. The Chronicle of Qin Shihuang in Historical Records reads: "Xu Shi, a Qi man, wrote that there are three sacred mountains in the sea, named Penglai, abbot and Zhangzhou, so please ask for it with children and men, so he sent it. The story of Xu Shi's visit to the elixir of Youth, although there are some discrepancies in different historical records, provides a strong proof for Xu's migration to Shandong more than two thousand years ago.

During the Han, Wei, Jin, Southern and Northern Dynasties, Xu's surname had developed to Hebei, Shanxi, Shaanxi, Gansu, Jiangxi, Zhejiang, Guangxi, Sichuan, Hubei and other places. During the Tang Dynasty, Xu entered Fujian and Guangdong, and entered Taiwan Province in the late Ming Dynasty. Because Xu's main force had moved away from the north as early as the Qin and Han Dynasties, several wars in northern China did relatively little harm to Xu. Especially in the Song, Yuan and Ming Dynasties, Xu's surname flourished in the four provinces of Jiangxi, Zhejiang, Jiangsu and Fujian, especially in Jiangsu, forming five famous families in Donghai, Gaoping, Langya, Puyang and Dongguan, and finally forming a typical oriental surname today.

during the song dynasty (96-1279), there were about 84, people surnamed Xu, accounting for 1.1% of the national population, ranking 17th. The largest province of Xu surname is Jiangxi, accounting for 23.5% of the total population of Xu surname in China and 2.4% of the total population of Jiangxi Province. The distribution in China is mainly concentrated in Jiangxi, Zhejiang (17.1%), Shandong (1.9%) and Jiangsu (1.6%), and the Xu surname in these four provinces accounts for about 62% of the total population of the country. Secondly, it is distributed in Fujian (8.3%), Anhui (5.9%), Sichuan (5.4%), Hubei (5.3%) and Henan (5%), and the Xu surname in these five provinces is concentrated by 3%. The whole country has formed a large gathering area of Xu with Jiangxi and Zhejiang as the center. The population of Xu in Guangdong, Guangxi, Yunnan and Guizhou and northwest China is very sparse.

during the Ming dynasty (1368-1644), there were about 1.92 million people surnamed Xu, accounting for 2.1% of the national population, ranking 1th. In Song Yuanming's 6 years, the net population growth rate was 2%, and the population growth of Xu was much higher than that of the whole country. In 6 years, the net population growth rate of Xu was as high as 128%, and the population increased by 1.8 million. During the Ming Dynasty, Zhejiang was the largest province with the surname of Xu, accounting for 35.1% of the total population of Xu in China and 4.5% of the total population of Zhejiang Province. The distribution in China is mainly concentrated in Zhejiang, Jiangsu (2.2%) and Jiangxi (9.2%), which accounts for about 64.5% of the total population of Xu, followed by Anhui (7.1%), Fujian (5.7%), Shandong (4.8%) and Hubei (4.2%). In the northwest and southwest, Xu is still a rare surname. During the Song, Yuan and Ming Dynasties, the general distribution pattern of Xu surname changed greatly, and its population mainly migrated from the north to the southeast, while the Xu surname in Sichuan mainly migrated to the two lakes and the south. The Yangtze River Delta is still the main gathering area of Xu surname in China, but another large gathering area of Xu surname has re-formed in Fujian and Guangdong in the southeast.

in the 6 years since the Ming dynasty, the population of Xu has surged from 1.92 million to more than 2 million, an increase of nearly 11 times. The average population of the Ming Dynasty was close to 93 million, and today's population is 1.2 billion, which has increased 13 times. The growth rate of Xu's population is lower than that of the whole country. In this 1 years, the growth rate of Xu's population showed a factory-like trend. At present, the distribution of Xu surname in China is mainly concentrated in Jiangsu (14.2%), Guangdong (1.3%), Zhejiang (8.9%) and Sichuan (7.4%), accounting for about 41% of the total population of Xu surname in China, followed by Shandong (6.8%), Jiangxi (6.6%) and Anhui (5.8%). Jiangsu is the largest province with Xu surname, accounting for 3.9% of the total population of the province. Three regions with high Xu surname distribution have been formed in China: Yangtze River Delta, East Guangdong and Sichuan. In the past 6 years, the degree and direction of Xu's population mobility have been greatly different from that of Song, Yuan and Ming Dynasties, especially in the direction of mobility. The migration from the east to Central China, North China and Sichuan has been greater than that from the north to the southeast. At the same time, the migration to Guangdong and Northeast China has also become an important direction of mobility.

The population distribution frequency of contemporary Xu surname is the highest in the central and southern Jiangsu, Hangjiahu Plain in northern Zhejiang and Yantai in Shandong, with the population of Xu surname reaching more than 9 people per square kilometer and more than 12 people in the central area.

The area with the highest density of Xu surname (more than 7.2 people/km2) accounts for 3.4% of the national territory, and the population of Xu surname is about 2.93 million. The area with 3.6-7.2 people/km2 accounts for 14.4% of the national territory, and the population of Xu is about 6.67 million. The area with 1.8-3.6 people/km2 accounts for 29.6% of the national territory, and the population of Xu is about 7.36 million. The area with 1-1.8 people/square kilometer accounts for 19% of the national territory, and the population of Xu is about 1.99 million; The area with less than one person per square kilometer accounts for 33.6% of the country's land area, and the population of Xu is about 97,.

Xu's surname is widely distributed, but it is not evenly distributed among people. Xu surname is one of the common surnames in the east and southeast regions. In southern Jiangsu, Zhejiang, southeastern Anhui, northeastern Jiangxi, central and southern Yunnan, Xu's surname accounts for the highest proportion of the local population, generally reaching more than 2.5%, and its coverage area accounts for 4.4% of the country's total area; In northern Jiangsu, most of Anhui, most of Jiangxi, eastern Shandong, eastern and western Yunnan, Wuwei, Gansu, northeastern Heilongjiang, eastern Liaoning, southeastern Jilin and northern Taiwan Province, Xu's surname accounts for 1.5-2.5% of the local population, and its coverage area accounts for 13.4% of the total area of the country. In North China, Central China, South China, Southwest China and other parts of Northeast China, Xu's surname accounts for .5-1.5% of the local population, and its coverage area accounts for 48.1% of the total area of the country. For example, in Shanxi, according to the statistics of the fourth census in 199, Xu's surname ranked 4th, with 159,789 people, accounting for .56% of the total population in the province; In other areas, Xu's surname accounts for less than .5% of the local population, and its coverage area accounts for 34.1% of the country's total area.

The blood type distribution characteristics of Xu's population are as follows: O type 6.47 million, accounting for 32.5%; Type A 5.76 million, accounting for 28.9%; Type B 5.84 million, accounting for 29.3%; Type AB was 1.85 million, accounting for 9.3%. The total population of Xu is 19.92 million.

Xu's surname is mainly distributed in Jiangsu, Zhejiang, eastern Shandong, central and eastern Anhui, northeastern Jiangxi, eastern Guangdong, and areas along the river in Heilongjiang, accounting for about 6.6% of the country's land area. Xu's surname is 4.87 million, accounting for about 24.3% of the country's population. Type is 1.65 million, type A is 1.42 million, type B is 1.38 million, and type AB is 42,. The vast areas such as North China, Central China, South China, Southwest China and Northeast China account for about 4.8% of the country's land area, with a surname of 12.9 million, accounting for about 121.6.8% of the country's Xu family, with 3.87 million of type , 3.52 million of type A, 3.56 million of type B and 1.44 million of type AB.

Other regions account for 52.6% of the country's land area, and the population of Xu is sparse, accounting for about 2.96 million, accounting for 14.9% of the national population of Xu. Type is 95,, type A is 82,, type B is 9,, and type AB is 29,.