According to a 2011 census, China is home to approximately 10.5 million Hui people, the majority of whom are Chinese-speaking practitioners of Islam, though some may practise other religions.The 110,000 Dungan people of Kazakhstan and Kyrgyzstan are also considered part of the Hui ethnicity.During the Yuan Dynasty, large numbers of Muslims came from the west, and since the Uyghur land was in the west, this led the Chinese to call foreigners of all religions, including Muslims, Nestorian Christians and Jews, as Huihui. "If you slaughter sheep, you will be considered guilty of a crime." He issued a regulation to that effect ...Genghis Khan called both foreign Jews and Muslims in China Huihui when he forced them to stop halal and kosher methods of preparing food: Among all the [subject] alien peoples only the Hui-hui say "we do not eat Mongol food". [In 1279/1280 under Qubilai] all the Muslims say: "if someone else slaughters [the animal] we do not eat".The traditional expression Huihui, its use now largely restricted to rural areas, would sound quaint, if not outright demeaning, to modern urban Chinese Muslims.Since almost all Muslims in China were exclusively foreign Arabs or Persians at the time, it was barely mentioned by the Chinese, unlike other religions like Zoroastrism, Mazdaism, and Nestorian Christianity which gained followings in China.
Is thought to have its origin in the earlier Huihe (回纥) or Huihu (回鶻), which was the name for the Uyghur State of the 8th and 9th centuries.As an influx of foreigners, such as Persians, Jews and Christians, most but not all of them were Muslims who came from western regions, they were labelled as Semu people, but were also mistaken by Chinese as Uyghur, due to them coming from the west (uyghur lands).so the name "Hui Hui" was applied to them, and eventually became the name applied to Muslims.Chantou Hui ("turbaned Hui") for Uyghurs, Dongxiang Hui and Sala Hui for Dongxiang and Salar people, and sometimes even Han Hui (漢回) ("Chinese Hui") for the (presumably Chinese-speaking) Muslims more assimilated into the Chinese mainstream society.In the 1930s the Communist Party defined the term Hui to indicate only Sinophone Muslims.