About I-Ching:

the i-ching, also known as the classics of changes, books of changes, zhoui and yijing, is one of the oldest of the chinese classic text. the book contains the divinition systems. traditionally, the i-ching and its hexagrams were thought to pre-date recorded history and based on traditional chinese methods. its origin trace back to 3rd and 2nd millenia BC. the oldest manuscript that has been found date back to the warring states period 475 to 221 BC. in this period it was interpreted with cosmology and philosophy. there are mainly 8 triagrams and from its the combibations makes 64 hexagrams. in this 64 hexagram there is a total map of cosmos and all status of human are contains deeply. each hexagram has its specific meaning.