Why do you say augury is China's most ancient art number

Augury is through a certain method to predict the future of activity, is a means of human to know the world.

Augury is one of the most ancient art number in China.Before people didn't invent words, people adopt the method of rope can remember to record what happened, during this period, the imago of god is tortoise shell and yarrow.People called the use of tortoiseshell divination, called by yarrow divination divinatory,; augury is the floorboard of the tortoise shell and yarrow divination.Later, with the development of human civilization, there are more and more used in divination items divination way more and more, but the augury is China's most ancient art.