any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:

(a) Killing members of the group;
(b) Causing serious bodily or mental harm to members of the group;
(c) Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;
(d) Imposing measures intended to prevent births within the group;
(e) Forcibly transferring children of the group to another group.
According to the United Nations General Assembly

https://www.un.org/en/about-us/

Who are the Uyghurs?        Why more than a million Ughurs are being held in camps in China?

The settled population of these cities later merged with incoming Turkic people, including the Uyghurs of Uyghur Khaganate, to form the modern Uyghurs. The Indo-European Tocharian language later disappeared as the urban population switched to a Turkic language such as the Old Uyghur language .

In Xinjiang, China, more than a million Uighurs and other Muslim minorities are being held in “re-education” camps which the Chinese government claims are benign vocational centers teaching useful career skills. But former camp detainees have described them as de facto prisons implementing mass brainwashing and obedience to the Communist party. As more evidence emerges of torture, forced sterilization of women and other methods of population reduction, should the situation in Xinjiang be termed a genocide? Hundreds of thousands of people from ethnic minorities, including the Uighur community, are being forced by the Chinese authorities to pick cotton, in the far western region of Xinjiang, according to information seen by the BBC.
More than a million Uighurs and others belonging to Muslim minority groups are believed to be detained in China’s Xinjiang region. China calls them “transformation camps” built to prevent extremism from spreading. However, reports indicate they’re more like prisons. BBC News correspondent John Sudworth got exclusive access to one of the facilities.