What cultural relics were there before the Xia Dynasty? What's your name?

Tortoise shell and animal bones used for divination in ancient China.

. Among them, tortoise shell, also known as Jabu, mostly uses tortoise's abdominal shell; Animal bones, also known as Oracle Bone Inscriptions, mostly use the shoulder blades of cattle, but also sheep, pigs, tiger bones and human bones. Jaber and Oracle Bone Inscriptions are collectively called Oracle Bone Inscriptions.

The earliest Oracle bones in China were found in Wuyang Oracle bones in the second and third cultural layers of Jiahu site in Wuyang from 8600 to 7800 years ago, which is regarded as the earliest writing origin in the world-engraving.

Divination with Oracle bones requires taking materials, sawing and scraping, and then drilling a round nest on Oracle bones with metal tools and a diamond-shaped groove next to the round nest. This process is called drilling and drilling. Then burn the Oracle bones with fire, and judge the bad luck according to the sign of the opposite crack of the Oracle bones.

In China in the late Neolithic period, nails or bones for divination appeared.