biological-warfare. Diseases were tested for use against Soviet and Chinese horses and other livestock. In addition to these tests, Unit 100 ran a bacteria factory to produce the pathogens needed by other units. Biological sabotage testing was also handled at this facility: everything from poisons to chemical crop destruction. Siege of Changchun On 20 August 1945 the city was captured by the Soviet Red Army and renamed Changchun. The Russians maintained a presence in the city during the Soviet occupation of Manchuria until 1946. National Revolutionary Army forces under Zheng Dongguo occupied the city in 1946, but were unable to hold the countryside against Lin Biao's People's Liberation Army forces during the Chinese Civil War. The city fell to the Chinese Communist Party in 1948 after the five-month Siege of Changchun, and the communist victory was a turning point which allowed an offensive to capture the remainder of Mainland China. Between 10 and 30 percent of the civilian population starved to death under the siege; estimates range from 150,000 to 330,000. the PRC government avoids all mention of the siege. People's Republic Renamed Changchun by the People's Republic of China government, it became the capital of Jilin in 1954. The Changchun Film Studio is also one of the remaining film studios of the era. Changchun Film Festival has become a unique gala for film industries since 1992. From the 1950s, Changchun was designated to become a center for China's automotive industry. Construction of the First Automobile Works (FAW) began in 1953 and production of the Jiefang CA-10 truck, based on the Soviet ZIS-150 started in 1956. Soviet Union lent assistance during these early years, providing technical support, tooling, and production machinery. In 1958, FAW introduced the famous Hongqi (Red Flag) limousines This series of cars are billed as "the official car for minister-level officials". In 2002, the local television broadcast was hijacked by a small group of Falun Gong practitioners. These events were depicted in the documentary Eternal Spring. Changchun hosted the 2007 Winter Asian Games. Geography Changchun lies in the middle portion of the Northeast China Plain. Its municipality area is located at latitude 43° 05′−45° 15′ N and longitude 124° 18′−127° 02' E. The total area of Changchun municipality is , including metro areas of , and a city proper area of . The city is situated at a moderate elevation, ranging from within its administrative region. In