Also, I'm present reading Stephen Oppenheimer's book, Out Of Eden, and he states that the oldest Mongoloid body type ever found is only 10k years old and it was found in the area around Lake Baikal. There are two types of Mongoloids, the Southern and Northern. The Northern Mongoloids have the most severe of the Mongoloid features, flattest face, Sundadont teeth, light skinned and epicanthic eyelid fold. The Southern Mongoloids have all these to a lesser degree but with Sinodont teeth.
I'm persuaded there's a connection between the Tarim mummies and Caucasian migration. Whether it originated in China and spread out from there or whether it came into China from elsewhere I'm not sure.
In Oppenheimer's book, which type of Mongoloid was found at Lake Baikal, northern or southern?