China's Geography, Population and Ethnicities
The image shows airline routes in China. The map is above the counter at
the Hangzhou Airport waiting lounge.
The dense air connections to the East serve the preponderence of the
1,200,000,000 Chinese. Still, according to [3, p.45], "Only 20% of the
total population is classified as urban."
The nationalities within China begin with Han, about 93% of the
population. However, that number doesn't give the full picture since the
Han have absorbed many other groups. The remaining 7% are distributed
over much (50%) of China's national territory.
 Taylor, Chris, et. al.,China, Lonely Planet Travel Survival Kit,
Hawthorn Victoria Australia: Lonely Planet Publications, 1996, ISBN
Klinger, Allen China as a Modern Nation.
Klinger, Allen Comments on Chinese Culture.