Islamic States in China

In 1933 ( when the Chinese central government had de facto ceased to exist) there was a short-lived state country in present day Xinjiang with names "Republic of Uighuristan" or "Islamic Republic of East Turkestan" (both names were used although the state has existed for less than one year). This state has used a star & crescent flag of triangular shape.
Harald Mueller, 28 August 1997

This flag uses the shahada out of the Saudi flag. An alternative rendering is shown below.
Uighuristan existed for less than a year between 1932 and 1933. It issued coins with national symbols on them: a triangular flag with a crescent and star, if I recall the crescent faces the hoist. On some of the coins the flag has a flamed border. Of course, no colors are provided.
Harald Mueller 1996-JUL-1

This rendering of the flag uses a shahada resemblin