Xi Qia became Minister of Finance of Manchukuo in 1934. He subsequently served as Imperial Household Minister and Interior Minister in 1936. At the end of World War II, he was captured by the Soviet Red Army and held in a Siberian prison until he was extradited to the People's Republic of China in 1950, where he later died in captivity at the Fushun War Criminals Management Centre in Fushun, Liaoning Province.
