The Ch'i-heng t'u is a pattern representing one of the Ancient Chinese cosmic theories, explaining the distance between the earth and the heavens, the movement of the sum and human relationships. While some scholars maintain that explanations such as these may have existed as early as the late Yin period, two instances of new evidence from Yin-hsu illustrate the fact that the origin of these patterns may be traced back to a time preceding the late Yin period.