Answer:
Oracle bones.
Step-by-step explanation:
They were called that way and used in the Shang Dynasty. The "oracle bones" were usually made from the shoulder blades of Oxen or the shell of a Tortoise. They were also used to write.
Rulers made questions and the bones were heated with metal rods, that caused their surfaces to fracture. The diviner then interpreted the cracks which were believed to be messages from the dead.
I hope this answer helps you.