I would imagine that the chinese will keep things under some control through whatever proxie government they set up while sucking the place dry. They will keep people eating at some level while the treasure gets loaded for transport on the new silk road. I wonder what the chinese will call their version of De Beers and Rands.
China a zero intention "sucking the place dry." That simply doesn't make sense for it's endgame of displacing the United States. What does an manufacturing powerhouse need to to keep it's economy growing at a steady pace? My bet is that Africa in the 21st Century, if China has it's way, will be significantly better than it was in the 20th.