http://www.stonegateinstitute.org/2854/china-mandate-of-heaven
China’s water problems can affect the rest of the world as well.
A large and multifaceted crisis is unfolding in China. The world’s most important rapidly-developing economy is running out of clean fresh water. As things get worse, this crisis will lead to an increase in global food prices, to a slowdown in China’s rate of GDP growth and possibly to a new set of tensions with its neighbors, especially Russia, which, in Siberia, controls the only large supply of fresh water near enough to meet China’s needs.
China is home to about 20% of the world’s population and about 7% of the world’s water, Traditionally, the correct management of water for transportation, irrigation and flood control was one of the ways the Chinese people could determine if the Emperor and his dynasty had the “Mandate of Heaven” or not. With the “Mandate of Heaven,” the leadership had the legitimacy and the authority to rule; without it, the people assumed that political trouble and a change of rulers was on its way.