[vacri]

Where are you getting the 40% figure from? Are you saying that Tibet(-ish) is 60% of the land area of China?

[Retric]

Eyeballing: http://www.undertheraedar.com/2012/06/population-of-china.ht.... Tibet is part of that side with 6% of the population, but rainfall is a major issue limiting population over a much larger area.