Sister-state relationships between governments are a wonderful way to promote educational exchanges, mutual business opportunities and cultural understanding. Chinese cities and provinces are always setting up some kind of forum or cooperation to gain off of one another’s advantages.
This trend is becoming increasingly popular among U.S. states and Chinese provinces. Connecticut and Shandong have such a cooperation agreement in place, although Connecticut has not shown as much commitment and dedication to advancing the cooperation as Shandong, which betrays the fact that Connecticut does not get it. New York however does get it — or at least a couple of NY legislators do, which speaks volumes for the state.
The theory is one which is based in economics. Some sovereigns have an abundance of capital, others have an abundance of labor, and some have an abundance of high technology. In order for a society to be optimally efficient, it may need to use or exploit the resources of another.