How many large-scale population movements have occurred in the history of our country?

Many, basically every great division period is accompanied by large-scale migration. However, there are probably the following reasons for government intervention: during the reign of Emperor Wu of the Han Dynasty, there were large-scale immigrants: in the second year of Yuan Shuo, 654.38+10,000 people were recruited to move to Shuofang and settle in the Hetao Plain and the area south of the Yellow River and Wujiahe today. There are many sources of migration, mainly from Kanto (now Hebei, Shandong, Henan, Anhui and other places east of Taihang Mountain). In the fourth year of Yuanshou (1 19), Kanto suffered floods year after year, and more than 720,000 poor people moved to southern Inner Mongolia, northwestern Shanxi, northwestern Shaanxi, southern Ningxia and Hexi Corridor in Gansu. In the fifth year of Yuanshou, the "traitor of the world" moved to the border region, with an estimated number of tens of thousands. In the first year of Yuanfeng (1 10 years ago), the people of Fujian and Vietnam moved between the Yangtze River and the Huaihe River, and the estimated number was above 100000. Together with the immigrants from other official organizations, in more than 20 years, no fewer than 6.5438+0.2 million immigrants were completely implemented by the government. For the vast majority of these immigrants, the cost from migration to settlement is entirely borne by the government, and there are a large number of officials and foot soldiers along the way. The migration distance of immigrants is at least several hundred kilometers, and the farthest distance is two or three thousand kilometers. At that time, the total population of the Han Dynasty was about 36 million, and immigrants accounted for one thirtieth of the total population, more than 3%. In the seventeenth year of Taihe in the Northern Wei Dynasty (493), Emperor Xiaowen decided to move the capital from Pingcheng (now Datong, Shanxi) to Luoyang. In the nineteenth year of Taihe, all the officials and people around Pingcheng moved to Luoyang and its surrounding areas, with a total of more than 6,543,800 people. Large-scale immigrants in the early Ming Dynasty were partly enforced by administrative means or resettled by troops, and most of them were guided by preferential policies given by the government. It mainly includes: moving rich households and landless peasants in the south of the Yangtze River to Fengyang, Anhui; Move local officials, rich households, craftsmen and soldiers to Nanjing; Soldiers and their families moved to all parts of the country through the establishment of health centers and places, as far as Yunnan and Gansu; Resettlement of Mongolian soldiers and civilians who surrendered or were captured from the Great Wall to all parts of the north; Move the border people in northern Shanxi and Inner Mongolia to Fengyang; Immigrated to Fengyang from Shandong and Jiangxi; Shanxi population was moved to Shandong, Henan, Hebei, Beijing and other places; Jiangxi people moved to Hubei, Hunan, Anhui, Sichuan and northern Jiangsu; People from Hubei, Hunan, Anhui and Jiangxi moved to Sichuan; The total number of military and civilian immigrants reached 1 1 ten thousand, accounting for 16% of the total population. Even if only non-military immigrants are counted, the total number is around 7 million, which is more than 10% of the total population. In the early Qing Dynasty, Kangxi, Yongzheng and Qianlong formulated preferential policies to encourage immigrants to move into Sichuan. Forty-one years after Qianlong (1776), more than 6 million immigrants and their descendants moved to Sichuan from Hunan, Hubei, Guangdong, Jiangxi, Fujian, Guizhou and Shaanxi, accounting for more than 60% of the local population. From 1860, the Qing dynasty opened the "forbidden land" in the northeast, and then adopted an encouraging policy. A large number of immigrants from Shandong, Hebei and northern regions migrated to the northeast, and by the end of the Qing Dynasty, the total number of immigrants exceeded100000. The above list does not include three large-scale population migrations to the south in the history of China, such as those after the Jingkang Rebellion in the Northern Song Dynasty (1 127), with a total population of several million. Nor does it include war or predatory immigration. For example, during the Sixteen Kingdoms period, after Zhao moved from the north to Xingtai (now Hebei) in the early 20 years of the 4th century A.D., the population in China moved to millions.