What are cowrie shells in ancient China?

Cowrie shells in ancient China were a type of small, hard-shelled mollusk with a smooth and shiny exterior, often found in various colors such as yellow, brown, or white. These shells were highly valued by the ancient Chinese people for their beauty and rarity, and were often used as currency, jewelry, or even as a form of divination. The cowrie shell's significance in ancient Chinese culture cannot be understated, as it played a vital role in trade, social status, and religious practices.