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The image contains one or several undisputed inaccuracies.
It should not be used to illustrate or provide information about the subject, but may be kept in order to provide the basis for a corrected image. If you disagree that it may be useful for this purpose feel free to request deletion.
Reason:
Taklamakan Desert is mostly uninhabited and should be in grey instead of yellow as if it is a Mandarin speaking area. Compare to the more rational perspective on a different topic here: File:Ethnolinguistic_map_of_China_1983.png, where the deep desert and mountain fastness is shown as uninhabited.
English: Chinese linguistic groups, 1990. The map shows the distribution of linguistic groups in China according to the historical majority ethnic groups by region. Note this does not represent the current distribution due to age-long internal migration and assimilation.
This image is a work of a Central Intelligence Agency employee, taken or made as part of that person's official duties. As a Work of the United States Government, this image or media is in the public domain in the United States.