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The term Dungan was used by the authorities of the former Soviet Union to describe Muslim people of Han Chinese origin. The term is more or less synonymous with Hui. They are found in parts of the territory of the former Soviet Union, especially in Kazakhstan, Uzbekistan, Kyrgyzstan, and Russia (mostly in Tatarstan). Their ancestors are thought to be Hui people who fled there during the Muslim rebellions in China in the 19th century.
The name Dungan is of obscure origin, but is probably Turkic. The Hui people, distributed across much of western and central China, are also referred to as "Dungans" by Turkic and Tajik peoples. It may refer to the eastern part of GansuProvince.
The Dungans are unusual among Chinese ethnic groups in writing their language using an alphabet derived from Russian.