The Spring and Autumn period also saw the introduction of the first metal coins; however, they were not initially round, instead being either knife shaped or spade shaped.
Periode Musim Semi dan Musim Gugur juga mengenalkan koin-koin metal pertama; namun, koin-koin tersebut awalnya tak berbentuk bundar, melainkan, berbentuk pisau atau berbentuk sekop.