https://en.wikipedia.org/wiki/Tarim_mummies
...Notable mummies are the tall, red-haired “Chärchän man” or the “Ur-David” (1000 BCE)...
Many of the mummies have been found in very good condition, owing to the dryness of the desert ... The mummies share many typical Caucasian body features .., and many of them have their hair physically intact, ranging in color from blond to red to deep brown, and generally long, curly and braided
Have these mummies been DNA sequenced?
The Chinese don't like those scrutinized, but given the cultural remains (fabrics including tartans) along with their physical characteristics, they are at the very least, cousins of modern Europeans. Indo-Europeans came from Central Asia.