From what I can till unification of China always came from the North, as did new dynasties. What would it take for the South to be the orginator of New Dynasties?
And look how they did! Invaded by Japan, and later forced to a tiny little island...Hey, the nationalists started out in Guangdong....
The Ming's rebellion started at the Yellow River...I think the Ming rebellion started in the south, but I'm not sure.