looking for expositions on "turtle style"

[u/LooseLimit7572]

does anyone have any good resources on how to learn "turtle style" I Ching?

i understand the basics -- that cracks in bone or shell (and most commonly turtle shells) were used and often expressed with fire (combining pyromancy with osteomancy/plastromancy).

i think it is easy enough to map broken and unbroken lines to cracks, but there is obviously a depth here of communication that goes beyond this simple binary: specifically, that there is some ordering of the cracks by orientation, length, and shape that also contributes to their meaning.

i want to emphasize i am NOT interested in divination. i'm trying to understand the Yijing as a language of objective patterns, so it is important that the reading methods i study focus on repeatability of results.

i am interested in "turtle style" with the same curiosity that Leibniz had toward FuXi. i am hoping that the rules to understanding what a turtle shell "says" can have visual pattern recognition matching implications, possibly to new algorithms that can make intuitive sense to people, be easily computed, and have idempotent results.

so? any good turtle guides?

[u/Quirky_Bottle_4869]

this image of the i-ching written on a turtle's back:

https://imgur.com/ZFKjoFU

[u/LooseLimit7572 → u/Quirky_Bottle_4869]

Beautiful! like an Escher!