I'll search through the posts. Indo-european doesn't seem like a good fit for Gansu but the argument sounds interesting.
Yup Anatolia too although I lump that in with the southern Black Sea. The last article I read about that region said it was home to the first domesticated pigs. One things for sure the ancient Chinese definately had a thing for pigs.
"One things for sure the ancient Chinese definately had a thing for pigs."
A trait which some say is shared by a former POTUS.