The Supreme Ultimate gives rise to the Two Forms, the Two Forms give rise to the Four Images, and the Four Images give rise to the Eight Trigrams. When the Eight Trigrams are stacked in pairs, one above the other, they form the sixty-four hexagrams. Hence, the sixty-four hexagrams are also called the "sixty-four doubled hexagrams" or simply "doubled hexagrams."
Theme: Notes on learning fortune-telling, dressed up as a novel.
