The Yellow River Map, Scheme, or Diagram, also known by its Chinese name as the Hetu, is an ancient Chinese diagram that appears in myths concerning the invention of writing by Cangjie and other cultu
A depiction of the system of the 9 zhou, or "river-islands" (州 or 洲, now usually used to refer to "provinces"), a system which Shun is credited with helping to develop, followed up by the essential work of Yu