These coins, used as early as the Spring and Autumn period (770–476 BCE), took the form of imitations of the cowrie shells that were used in ceremonial exchanges.
Koin-koin tersebut, yang digunakan dari awal periode Musim Semi dan Musim Gugur (770–476 SM), mengambil bentuk imitasi dari cangkang siput yang digunakan dalam pertukaran seremonial.