The fifty-sixth hexagram, Lu ("The Wanderer"), places Li (Fire) above Gen (Mountain). Fire on the mountain, burning quickly across the grass and moving on, gives the image of the traveler who does not stay, the stranger passing through. It follows Abundance in the King Wen order, since one who loses a great home may become a wanderer.
In the xiantian, or Earlier Heaven, arrangement, the binary order devised by Shao Yong in the eleventh century and traditionally ascribed to Fu Xi, this Lu stands 51st of 64, apart from its fifty-sixth position in the King Wen sequence traced above; it was this arrangement the Jesuit Joachim Bouvet sent from Beijing in 1701 to Gottfried Wilhelm Leibniz, who read its broken and unbroken lines as his own binary 0 and 1.
Read from the bottom, the six lines of The Wanderer run yin, yin, yang, yang, yin, yang. A later interpretive layer absent from the original Zhou Yi, the nuclear hexagram (hu gua), treats lines two through four as a lower trigram and lines three through five as an upper one; here they combine as Dui over Xun, forming hexagram 28, Great Preponderance (Da Guo), a hidden figure first associated with the Han-dynasty scholar Jing Fang, whose Yijing commentary of the first century BCE is credited with the earliest appearance of nuclear trigrams. The Wanderer's King Wen partner is hexagram 55, Abundance (Feng); most of the sixty-four pair this way, related by turning the whole figure upside down, while the eight hexagrams built from a single doubled trigram pair instead by inverting every line. Mawangdui (1973) orders hexagrams by trigram, not King Wen; names here follow Wilhelm and Baynes, 1950, not Legge, 1882.