Bone book

The secular world's books were normally written on paper or beast hide. Within sects, most ancient records were recorded with spiritual jade plates. One reason was because they were easy to use, and another was because they lasted a long time.
But they also had a drawback. That was that high level runes could not be recorded within them. That was why sects would use the bones of high ranking Magical Beasts to create bone books.
These bone books could record runes clearly. Furthermore, they even contained the spiritual mark of the expert that carved the runes, making it easier for others to comprehend them.
==References==
Category:Terminology
Category:Book