Tong Bei () literally translated as "bronze cowry" or "bronze shell", is an ancient coin found in China.
This coin itself is a replica of more ancient cowry money, made for the purpose of replacing it.
A cowry shell or bronze cowry was denominated in bèi (è²Â) and string of cowry shells was called a péng (æÂÂ) however it is not known how many bèi were in a péng.