According to the court historians of the Chou Dynasty, two sequences of the I Ching hexagrams preceded that of the so-called King Wen version we know today. Whereas that hexagram sequence of the received version of that Chou I begins with the hexagram Heaven over Heaven, the court historians of the time report that the sequence attributed to the earlier Shang Dynasty began with the hexagram Earth over Earth, and that of the even earlier Xia Dynasty began with the hexagram Mountain over Mountain.
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What this book is not: It is pointedly not a scholarly text or academic rendition of an actual text of antiquity. It does not present an authentic rendering of any such relic—there is no physical text from that time period.
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What this book is: It is a divination. An extended divination, to be specific. Based on my fifty year relationship with the Oracle and its symbols, this is my reading of the hypothetical reconstructed hexagram sequence hinted at by the Chou court historians.