First, there are three sources.

2. The surname is Ji.

Zhou Wuwang ruined his business and was given the same surname as Gan Guo. His hometown is Yiyang, Henan today, which is the hometown of Jiang. When Zhou Ping and Dong Wang moved to Luoyi (now Luoyang, Henan), they named Gan Guo Zhouyi. King Hui of Zhou sealed his youngest son and uncle, took the food of Gan and Viscount, called Gan, and later took the city as his surname. Ji surnamed Gan has a history of 2600 years.

3. The inflow of foreign genes:

For thousands of years, the inheritance of Gan's surname is relatively simple. In the Ming and Qing Dynasties, the surname Gan first appeared in the toast of Qinghai. Later, in the Qing Dynasty, the surnames of Manchu Eight Banners were changed to Han surnames one after another, and Gan Jia's and Galu's of Manchu Eight Banners were collectively changed to Gan's, and then Gachagute's and Gachikewuti's of Mongolian were also changed to Gan's.

Second, migration distribution, gathering place

In the pre-Qin period, the surname Gan mainly lived in Henan.

During the Song Dynasty, there were nearly 67,000 cadres surnamed Gan, accounting for 0.09% of the national population, ranking143rd. At that time, Jiangxi and Sichuan were big provinces with Gansu surname, accounting for about 67% of the total population of the country, followed by Shaanxi and Henan.

During the Ming Dynasty, there were about 68,000 people surnamed Gan, accounting for 0.07% of the national population, ranking behind170th. Jiangxi is the largest province with Jiangxi surname, accounting for about 44% of the population of Jiangxi nationality. Secondly, it is distributed in Guangxi, Sichuan, Hubei, Hunan, Jiangsu and Guangdong, which account for 49% of the population named Gan. The whole country has basically formed a distribution area with Jiangxi as the center and mainly spreading southward.

Third, the county hall number

Wang Jun

Bohai County: A county was established in the Western Han Dynasty, which is equivalent to the coastal areas of Bohai Bay in Hebei Province and Liaoning Province.

Danyang County: The county was established in the second year of Emperor Wu of the Han Dynasty (before 12 1), which is equivalent to Xuancheng area in Anhui Province today.

The name of a hall

Old school: Gan Pan of Shang Dynasty was the teacher of Shang Dynasty, and he was called old school.

Wu Chengtang: During the Warring States Period, Ganluo of Qin State was sent to Zhao State at the age of 12. Wang Zhao jiao ying Through Ganluo's diplomatic activities, Zhao cut five cities to Qin, Qin named Ganluo as an upper minister, and gave all his grandfather's fields to Ganluo as prime minister.

Four, Gan surname blood type:

Generally speaking, the blood group distribution of people surnamed Gan is: O type accounts for 36.6%, A type accounts for 29.3%, B type accounts for 26.2%, and AB type accounts for 7.9%.

Five, the distribution of contemporary Gan surname

The population of contemporary Gan surname is about 840,000, which is the155th surname in China, accounting for about 0.067% of the national population. Since the Song Dynasty, the population growth rate of Gan surname has been declining during the period of 1000. At present, the largest province with Gan surname is still Jiangxi, accounting for about 13% of the population with Gan surname in China. The national Gan surname is mainly distributed in Jiangxi, Hunan, Hubei, Guangxi, Guangdong and Sichuan, which account for 65% of the population of Gan surname. Secondly, it is distributed in Henan, Guizhou, Chongqing, Anhui and Fujian. These five provinces and cities have concentrated 23% of the population surnamed Gan. The distribution area of Gansu surnames centered on Jiangxi and Hunan has been formed throughout the country.

The distribution frequency of Gan surname in Jiangxi, most of Hunan and Hubei, southwestern Anhui, most of Fujian and Guangdong, most of Guiqiong, most of Sichuan and Guizhou, eastern and northern Yunnan, northwestern Xinjiang is above 0. 15%, and the central region can reach above 0.4%. The coverage area of these areas accounts for about 18% of the total area of the country, and about 59% people named Gan live there. In eastern Guangdong, western Fujian, southwestern Zhejiang, central Anhui, southeastern Henan, northern Hubei, Chongqing, northeastern Sichuan, western Hunan, northern Guizhou, most of Yunnan, and central Gansu, the distribution frequency of Gan surname among local people is about 0. 1% 0. 15%, and the coverage area of these areas accounts for about/kloc of the national total area.