Pertaining to the ancient Chinese text and oracle known as "I Ching", "Yi Jing", or any of a number of transliterated spellings, in English often known as "(The) Classic (Ching) of Change(s) (I)". This extremely well-regarded classic Chinese cultural hallmark includes trigrams, hexagrams, commentaries, and interpretation popularly consulted using (3) coins or (50) yarrow stalks.