What does gossip have to do with turtles?

According to legend, Fuxi's creation of gossip is based on the deduction of the Book of Hutuluo.

The dragon and the horse carry the "river map" and the tortoise carries the "Luoshu".

(On the one hand, it is thought that the arrangement of turtle back lines is octagonal, just like Luo Shu)

Later, some ancient people used tortoise shells for divination and recorded the divination results on tortoise shells.