between Hebei and Liaoning. Under Japanese occupation, the name Guandong was more specifically associated with the Kwantung Leased Territory around Dalian, "Kwan-tung" being the same name in Wade-Giles romanization. Administrative divisions Cities with urban area over one million in population Provincial capitals in bold. History Northeast China was the homeland of several ethnic groups, including the Koreans, Manchus (or Jurchens), Ulchs, Hezhen (also known as the Goldi and Nanai). Various ethnic groups and their respective kingdoms, including the Sushen, Xianbei, and Mohe have risen to power in Northeast China. The region came under the rule of various states throughout history, including Yan, Jizi Chaoxian, Weiman Chaoxian, Fuyu, Western Han, Gaogouli, Xin dynasty, Eastern Han, Gongsun Yan, Cao Wei, Western Jin, Former Yan, Former Qin, Later Yan, Tang dynasty, Wu Zhou, Bohai, Liao dynasty, Jin dynasty, Eastern Liao, Later Liao, Eastern Xia, Mongol Empire, Yuan dynasty, Northern Yuan, Ming dynasty, Qing dynasty, and Republic of China. During the late Qing dynasty, Northeast China came under influence of the Russian Empire with the building of the Chinese Eastern Railway through Harbin to Vladivostok. The Empire of Japan replaced Russian influence in the region as a result of the Russo-Japanese War in 1904–1905, and Japan laid the South Manchurian Railway in 1906 to Port Arthur. During the Warlord Era in the Republic of China, Zhang Zuolin established himself in Northeast China, but was murdered by the Japanese for being too independent. The last Qing emperor, Puyi, was then placed on the throne to lead a Japanese puppet state of Manchukuo. After the atomic bombing of Japan in 1945, the Soviet Union invaded the region as part of its declaration of war against Japan. From 1945 to 1948, Northeast China was a base area for the Communist People's Liberation Army in the Chinese Civil War. With the encouragement of the Soviet Union, the area was used as a staging ground during the Civil War for the Chinese Communists, who were victorious in 1949 and have been controlling this region since. Demographics Northeast China has a total population of about 107,400,000 people, accounting for 8% of China's total population. The overwhelming majority of the population in the Northeast is Han Chinese, many of whose ancestors came in the 19th and 20th centuries during a migration movement called "Chuang Guandong" (). Northeast China historically had a significant Han Chinese population, reaching over 3 million by the