>>The Chinese were farming some 8000 years ago; by 6000 years ago characters for a written language were created. Bronze smelting in China is dated back to some 4000 years ago. Records of the Shang Dynasty date back to 1600 years BC.<<

But they couldn't have been making maps or anything. That would be nothing more than speculative embellishment. They left that to the white man because obviously they weren't smart enough to do it themselves.