China
I Ching — The Chinese Book of Changes
Three thousand years of wisdom in sixty-four hexagrams, cast with coins or yarrow stalks.
The I Ching, or Book of Changes, is among the oldest divination systems still in use. A question is held in mind while coins are tossed six times, building a hexagram of solid and broken lines — one of sixty-four archetypal situations, each with layered commentary refined over millennia.
Confucius reportedly wished for fifty more years to study it. Beyond fortune-telling, the I Ching became a philosophy of timing: knowing when to advance, when to yield, and when to simply wait.