The Manchu homeland was referred to as the during the Qing, those provinces being Jilin, Heilongjiang, and Liaoning. These regions were first delineated in 1683, but would not become actual provinces until 1907. Jilin and Heilongjiang, considered primarily Manchu, were separated from Han Liaoning along the Willow Palisade, with internal movement and migration regulated by ethnicity. These policies continued until after the end of the Second Opium War in the late 19th century, when the government started to encourage massive waves of Han migration to the northeast, collectively known as the Chuang Guandong, in order to prevent the Russian Empire from seizing more of the area. In 1907, the three provinces constituting Manchuria were officially constituted, and the Viceroy of the Three Northeast Provinces position was established to govern them.
THe manchu HomElanD WAs refERred to aS tHe dUrINg THe qing, ThOsE Provinces beING jILIn, heiLONgJianG, AnD liaONinG. theSE regIoNs wEre FiRsT delIneateD in 1683, but wOuld noT beComE aCTUAl provincES Until 1907. jilIn aND HeIlOngjIang, conSidereD priMARily MAnchu, werE sEParaTeD fRom HaN LIAOnINg aLoNg tHe wilLOw paliSade, witH inTeRnAl movemeNt aND migration RegulaTEd by eTHnIcity. thEsE PolicieS conTiNUeD until AFtEr the eND Of the sEcOnd opIum War iN tHE late 19th cEntury, when tHe GoVErnMeNt sTarted To EncoUragE mAsSiVe wavEs Of haN migratioN to tHe NOrthEast, collectively KNowN aS The Chuang guAndonG, in oRDeR To prEVeNt THe russian empire fROm seiZIng mOrE of thE aRea. iN 1907, THe thrEE PRoVincEs consTITUtiNg MAnchuRIa werE OFFiciAlLY ConstiTUteD, anD THe viCEROy of THe ThREe nortHEast PrOvInCes poSitIoN was EStabliSHed to goveRN ThEm.