Hi there, a "oracle bone" is a piece of bone that was used by people in ancient China to tell the future. These bones were usually from the shoulder blades of oxen or turtles, and they were used by writing a question on the bone and then heating it up until it cracked. The people who used the oracle bones believed that the cracks in the bone had special meanings that could tell them what would happen in the future. These bones were often used by important people like kings and queens to help them make decisions about things like wars or choosing a new leader. Nowadays, people study oracle bones to learn more about ancient China and how people used to live and think back then.