Hexagram 10: Treading (履) & Tzolkin

Treading (履, Lǚ) is the hexagram of the careful step across dangerous ground — Heaven above, the Lake below. The image of treading upon the tail of a tiger that does not bite describes an objectively risky situation in which proper conduct alone is enough to pass through unharmed. The superior person discriminates between what is high and low, and moves with deliberate care.

In the Argüelles Codon system, hexagram 10 corresponds to kins 37–40 of the Tzolkin calendar. Kin 37 (Red Earth, Navigation) and kin 38 (White Mirror, Endlessness) carry tones 11–12, kin 39 (Blue Storm, Self-Generation) closes a wavespell at tone 13, and kin 40 (Yellow Sun, Universal Fire) opens the next one at tone 1. That threshold — the close of thirteen steps and the start of a new cycle — echoes the careful tread across dangerous ground.

Both traditions speak to the same point from different angles: the I Ching through the language of proper conduct in the face of risk, the Tzolkin through the rhythm of wavespells closing and opening. This is an interpretive bridge, a lens, not a proven dependency — but it points to a shared archetype: conscious care lets one safely cross the threshold.