Sometimes called the Middle Kingdom. China’s prehistory is hidden from view, not only to westerners but to the Chinese people as well. It has mostly been hidden, not by political design, but by serious obscurity, its written history strongly shadowed in myth and legend. But now archeological evidence is emerging to throw light on that dark period of Chinese history. A time when artisans invented a unified alphabet, sword that don’t rust for over 1,000 years, silk, jade , and flood control.