Excerpts from Books and Wikipedia
"Born in 1906, Pu Yi was the 12th and last emperor of the Manchu Qing dynasty, which had ruled China since 1634. . . . In 1912, the regent Empress Longyu was forced to abdicate under pressure from Sun Yat-Sen's republican revolutionary movement in southern China. But Pu Yi retained the title of emperor and his apartments in Beijing, where his Scottish tutor, Reginald Johnson, proved to be a stabilizing influence. Restored to the throne by a warlord in 1917, Pu Yi moved to Manchuria under Japanese control in the 1920s and was proclaimed puppet Emperor Kang De of the Japanese protectorate of Manchukuo in the 1930s. Deported to Japan and then to house arrest in a Soviet dacha after World War II, Pu Yi was returned by Stalin to China and imprisoned by Mao Zedong 15 years for collaborating with the Japanese. [Furtado: 1001 Days]