Weren't you mentioning a 25k date last night for the Venus figurines and other art artifacts that had wide spread similarities?
Yes, for the earliest known examples. But I should mention that Venus figurines of various styles appear all the way down into the Iron Age in some places (for example Syria-Palestine--Biblical Archaeological Review has run some articles on this), so there would have to be additional information to pinpoint a date for a given figurine. One thing I find interesting is that Venus figurines appear in the Indus Valley civilization towards the end of the 2nd millennium BC, which seems like it could potentially link with the Silk Road trade at that time. . .
BTW, here's something completely different I just found:
The skeletal remains from southern China are predominately negroid.(Chang 1964, p.70)