What are the written materials from Xia Dynasty to Shang Dynasty?

There are three kinds of written records in Xia and Shang Dynasties: Zhong Ding pottery, bamboo slips and tortoise shell tablets. It has been proved that many pottery wares have been unearthed in Zhong Ding. The appearance of Oracle Bone Inscriptions was also confirmed, but Oracle Bone Inscriptions was mainly used for divination and recorded the divination contents. Formal politics, economy and culture are mainly recorded in bamboo slips and wooden slips, but these materials are not easy to preserve and books are destroyed by war, so few bamboo slips and wooden slips have been unearthed in China so far. Moreover, the characters "Shu" and "Dian" in Oracle Bone Inscriptions are all in the shape of bamboo slips, so there must have been writing materials such as bamboo slips and wooden slips at that time.