My, completely amateur, idea would be that, there are two major regions in China for centralised power. Beijing and Shanghai. Now with the massive growth in the

My, completely amateur, idea would be that, there are two major regions in China for centralised power. Beijing and Shanghai. Now with the massive growth in the Peal River Delta region, there is a base for a third major region. Currently it is not, because there is no one leader, you have Macau, Hong Kong, Shenzhen, and a large number of other cities in the region. If Shenzhen, and the people in charge there, are able to become the defacto leaders of the entire region, then you have another centralised regional base, away from Beijing. Which means less power in the central government.