Migrated provinces, commanderies and counties

Since the Upheaval of the Five Barbarians, a large number of northern refugees migrated south. These migrants called "qiao ren" (, literally the migrated people) were the base of the migrated provinces, commanderies, and counties. Bearing northern place names, they were set up by the Eastern Jin dynasty. Such a move was not unprecedented, the central government migrated the whole commandery or county to a new place as early as the Han dynasty. However, they emerged on a massive scale since the Eastern Jin. == History ==

During the reigns of the Emperor Yuan, Emperor Ming and Emperor Cheng, the migrated provinces, commanderies and counties were concentrated in the area south of the Huai River and the Lower Yangtze Plain. The earlier typical classic examples were migrated Langya Commandery (, its original counterpart in modern Linyi, Shandong) within migrated Fei County () in Jiankang, but they were certainly not the earliest. At least migrated Huaide County (, its original counterpart in modern Fuping, Shaanxi) was established in there, around 320 before that. According to the Book of Song:(After Disaster of Yongjia, the refugees from You, Ji, Qing, Bing, Yan and Xu provinces came across the Huai River, some even came across the Yangtze River and stayed in Jinling Commandery... The migrated commanderies and counties were established to govern them. The seats of Xu and Yan provinces perhaps were moved to the area north of the Yangtze River, where the migrated You, Ji, Qing, Bing provinces were established also.) Purposes • declaring the legitimacy of government • claiming to the occupied northern territory and evoking people's desire to resume • deadening the homesickness of qiao ren • manifesting the higher status of the qiao ren who came from the aristocratic clans • attracting the Han Chinese in the North cross the border to pledge to the South authorities • fostering economic growth The belts where qiao ren lived subdivided into 3 administrative levels, similar to the ordinary administrative divisions: • migrated provinces or qiao zhou () • migrated commanderies or qiao jun () • migrated counties or qiao xian () After Emperor Wu of Liu Song recaptured some lost northern territory, some of them there were prefixed with "north" or "bei" () to distinguish them from their migrated counterparts in the south. After Liu founded the Liu Song, the prefix bei was dropped while migrated place names that had derived from their prototypes in the north took on the prefix "south" or "nan" (). Still, there were a few exceptions to prefixed with "east" or "dong" () and "west" or "xi" (). For instance, Dong Jingzhao (, in modern Xingyang) and Xi Jingzhao (, in modern Hanzhong). As time goes by, the migrated provinces, commanderies and counties plunged the administrative divisions into chaos. For instance, Yinping County was located in the southeastern part of Gansu Province nowadays initially. While it had four migrated counterparts. (In olden days, subdividing the territory was for the benefit of the ordinary people; while a former noble monarch devised the system, he would be fair to his people without distinction between huangji and baiji. Since the civilians were displaced by the war, the refugees who sought shelter in the Lower Yangtze Plain could revolt at any time. In such circumstances, they were allowed to live there with privilege and hold baiji, which states the bearer's hometown. That would have been a long time ago. They are living in peace and security now, while their ancestors' tombs are arranged in rows, even though where they are living is not their hometown. It is high time to regularize the boundary again, adopt tu duan to register, make the criterion for validating the qualification of civil servants explicit, and legislate the civil code...)Once the situation settled down and the population swelled, the considerable amount of northerners flooding into the south magnified the economic and social problems. Reforms were clearly in order. Hence, tu duan was an increasingly important issue for the Eastern Jin and the subsequent Southern dynasties. Tu duan policy The tu duan (') is the abbreviation for yi tu duan (', means classifying people according to their present habitation). The terms were firstly mentioned in the Book of Jin:It was a solution to put an end to the chaos the migrated provinces, commanderies and counties brought, and ensure the hukou system operated smoothly. Ten times in total tu duan implemented in the Eastern Jin and the Southern dynasties. • the 1st began in Xianhe era () • the 2nd began in 341 () • the 3rd began in 364: Gengxu tu duan (; ) • the 4th began in 413: Yixi tu duan • the 5th • the 6th began in 457 • the 7th began in 473 • the 8th began in 480 • the 9th began in 502 • the 10th began in 560 Had misgivings about the potential conflict of interest, the government was obliged to meet some qiao ren, especially the constituent parts of the Beifu Army (), halfway every time the policy was implemented. == Influence ==