A collaborative study between universities in Michigan and China, lead by Professor Talhelm, proposed an extremely interesting hypothesis as to why Northern and Southern Chinese people developed differently. Their hypothesis states that the main reason for the North and South divide can be traced back to rice and noodles. The Northern and Southern regions of China are roughly divided by what we know in the West to be the Yangtze River (长江).The area below the Yangtze River is largely a rice growing area, while the area that lies North is more suitable for the cultivation of wheat. In the Southern region of China, rice is largely grown on irrigated land. This harvesting method requires the sharing of water as well the building of dikes and canals, all of which require frequent maintenance. Thus, Southern rice farmers historically would collaborate in order to mutually create and maintain the infrastructure needed to successfully harvest the rice. Rice farming is typically very labor intensive and thus, requires a huge amount of collaboration in order to be successful. This, Talhelm argues, is largely responsible for the interdependent and collaborative mind set of the Southern Chinese people, who would work together in order to pursue the common goal of a successful rice harvest.