Have you lost Liu Yao?

Six-hexagram divination is a prediction method of Zhouyi divination and the earliest method of gossip divination, and the specific process has been lost.

The prediction of six hexagrams and eight diagrams is a law summarized by the ancients by observing the operation law of nature. Originated from Fang Jing's Najia system in the Western Han Dynasty. At first, 50 yarrow was used, and it was not until the Song Dynasty that "money was used instead of yarrow".