I CHING - HEXAGRAM No. 57 - SUN The fifty-seventh hexagram of the sacred Book of Changes, or I Ching, or The Book of Chou, used in China both for divination and as a source of philosophical enquiry. This double page sets out the beginning of the reading for this hexagram in the second column from the left, of the right-hand page: the two pages are from a tenth century Chinese printed blockbook. This hexagram is one of the eight double-trigrams: the six lines are made from the meeting an upper Sun (or 'Penetrating Wind') with a lower Sun, and is followed by the traditional rationale pertaining to this meeting of the two trigrams. As a whole, this hexagram is called Sun, and is usually translated as meaning 'The Gentle', because of the double action of the wind.