The migration of Yang's genealogy

Later, it was destroyed by the Jin Dynasty. As far back as the Spring and Autumn Period and the Warring States Period (77-221 BC), some people surnamed Yang moved from Hongtong County, Shanxi Province to Jiangsu and Anhui Province, scattered in the middle and lower reaches of the Yangtze River. In the early years of Hongwu, people called it "Hongwu left his job". According to the records, in Zhu Hongwu's "blood-washing Hunan" war at the end of Yuan Dynasty and the beginning of Ming Dynasty, the indigenous people in Hunan suffered unprecedented catastrophe, especially in Changsha, Yueyang, Changde, Yiyang and Xiangtan. After the founding of the People's Republic of China, Zhu Yuanzhang adopted the policy of "Jiangxi fills Huguang" in order to revive Hunan, so a large number of Yang clans in Jiangxi and Zhejiang moved to Huguang area.

during the song dynasty, there were about 2.1 million people surnamed yang, accounting for 2.7% of the national population, making it the seventh surname in the song dynasty. The largest province with Yang surname is Sichuan, accounting for 24.7% of the total population of Yang surname in China. The distribution in China is mainly concentrated in Sichuan, Shaanxi and Shanxi provinces, accounting for about 46% of Yang's population, followed by Henan, Hebei and Hunan provinces, with a concentration of 2%. The whole country has formed three large gathering places of Yang surname centered on Sichuan, Hunan, Shanxi, Hebei and Henan.

During the Ming Dynasty, there were about 2.4 million people surnamed Yang, accounting for 2.5% of the national population, making it the sixth largest surname in the Ming Dynasty. The net population growth rate of Song Yuanming in 6 years was 2%, and the population growth rate of Yang was slower than that of the whole country. The distribution in China is mainly concentrated in Zhejiang, Jiangxi, Jiangsu and Shandong provinces, accounting for about 42% of the total population of Yang, followed by Shanxi, Sichuan, Fujian, Shaanxi and Hunan provinces, with a concentration of 36%. Zhejiang has become the largest province with the surname of Yang, accounting for about 11.1% of the population of Yang. The whole country has re-formed four areas where the population of Yang is concentrated: Zhejiang and Sulu, Jiangxi and Fujian, Shanxi and Shaanxi, and Sichuan and Hunan.

The population of contemporary Yang has reached 4 million, which is the sixth largest surname in China, accounting for about 3.19% of the national population. In the 6 years since the Song and Ming Dynasties, the population of Yang has soared from 2.4 million to 4 million, an increase of more than 16 times, and the growth rate is higher than that of the national population. The distribution in China is mainly concentrated in Sichuan and Henan provinces, accounting for about 17% of the total population of Yang, followed by Yunnan, Hunan, Guizhou, Shandong, Hubei and Hebei provinces, with a concentration of 34%. Sichuan is the largest province of contemporary Yang surname, with 9% of the total population of Yang surname. The whole country has formed two clusters of Yang surname: Yunnan, Guizhou, Sichuan, Hunan, Henan, Hebei, Shandong and Hubei.

The schematic diagram of the distribution frequency of Yang's surname in the population shows that in Yunnan-Guizhou, most of Sichuan, southern Chongqing, western Hunan and northern Wenwen, the proportion of Yang's surname in the local population is above 4.5%, and some of them are as high as nearly 13%. Its coverage area accounts for 13.6% of the total land area, and about 23% of Yang's population lives. In Shanxi, Hebei, Henan, Beijing, Tianjin, Shaanxi and Ningxia, most of Gansu, eastern Qinghai, northern Xinjiang, central and northeastern Inner Mongolia, western Heiji, most of Hubei, central and northern Hunan, northwestern Anhui and central Guangxi, the proportion of Yang's surname in the local population is generally 3%-4.5%, and its coverage area accounts for 27.3% of the total land area, and about 34% of Yang's population lives.