关东州
Manchus formed a minority in Manchukuo, whose largest ethnic group was Han Chinese. The population of Koreans increased during the Manchukuo period, and there were also Japanese, Mongols, White Russians, and other minorities. The Mongol regions of western Manchukuo were ruled under a slightly different system in acknowledgment of the Mongolian traditions there. The southern tip of the Liaodong Peninsula (present-day Dalian) continued to be directly ruled by Japan as the Kwantung Leased Territory until the end of World War II.