Line correspondences

Fanyao: turn-over line or lines.

I make use of "fan yao", the connection of a changing line with the corresponding line in the relating hexagram. In my website every line has a hyperlink to its fan-yao. E.g. the fan yao of hex.1 line 2 is hex.13 line 2. One is yang and the other yin: turned over, fan in Chinese. Bradford Hatcher coined the term. Just like me, he had noticed the correspondence between many of these two lines.

There are no texts before the 11th century where the concept of changing lines is mentioned. Their first appearance is in the writings of Ouyang Xiu (1007-72).

In the 4th century BC, in the Zuo Zhuan, a line of a hexagram is indicated by the hexagram it changes to. Qian zhi dayou is hex.1, line 5, or "Hex.1 its Hex.14". Zhi can mean 'moving to', but probably it means simply 'its', a genitive particle, like qi2. In one Zuo Zhuan-story zhi and qi are used alternatively. In the explanation of the oracle they did use the changes in the trigrams though. Water changing to lake etc.

(information from Rutt "Zhouyi").

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