Who were the red-haired Chinese mummies?

Haplogroup H is a human mitochondrial DNA (mtDNA) haplogroup. The clade is believed to have originated in Southwest Asia, near present day Syria

Approximately 32% of people with Ashkenazi Jewish ancestry are in haplogroup K, with about 21% in K1a1b1a alone

“Considering the presence of haplogroups H and K in the Xiaohe people and the geographical distribution of shared sequences, we conclude that the west Eurasian component observed in the Xiaohe people originated from western Europe, and maternal ancestry of the Xiaohe people might have close relationships with western Europeans,” Li and colleagues note. By the Bronze Age, the people buried at Xiaohe cemetery were already “admixed,” coming together millennia earlier in Siberia and Mongolia”

https://www.forbes.com/sites/kristinakillgrove/2015/07/18/these-red-haired-chinese-mummies-come-from-all-over-eurasia-dna-reveals/?sh=427dde483e2c