跟考古对的上的中国史前大洪水发生在四千年前的黄河上游，也跟禹出西羌相符：

https://www.douban.com/group/topic/137455529/

http://www.sciencemag.org/news/2016/08/massive-flood-may-have-led-chinas-earliest-empire
--
FROM 117.68.229.*