Climate Changes in Prehistory and History
By Ken Hsu <email@example.com>
... The 4000 BP event hit China also. When the legendary King Huangti ruled in China, at about 3,000 BCE, mulberry trees grew in north China where elephants and rhinoceros roamed. The climate turned cold and arid then. Yu, the first king of the Xia Dynasty, received credit for having tamed devastating floods. He may in fact not have done more than his predessors, except flooding eased when rain storms ceased their visitation.