While an integrated market with one set of rules will improve efficiency and connectivity, it could limit the ability of regions and cities to respond to local needs. Centralisation is also likely to exacerbate the problems of smaller cities as business and people are drawn to megacities.
Just as China should make use of its investment deal with the EU to boost internal reforms, the EU could also see the agreement as a chance to deepen relations with China, when European unity and economic stability are under stress.