Physiographic macroregions of China

Physiographic macroregions of China is a term suggested by an American anthropologist G. William Skinner as a subdivision of China Proper into nine areas according to the drainage basins of the major rivers and other travel-constraining geomorphological features. They are distinct in terms of environment, economic resources, culture and more or less interdependent histories with often unsynchronized developmental macrocycles.

Source: Wikipedia — Physiographic macroregions of China (CC BY-SA 4.0)