The history of Chinese currency spans more than 3000 years from ancient China to imperial China and modern China. Currency of some type has been used in China since the Neolithic age which can be traced back to between 3000 and 4500 years ago. The history of China's monetary system traces back to the Shang dynasty (c. 1766–1154 BCE), where cowrie shells served as early currency. Cowry shells are believed to have been the earliest form of currency used in Central China, and were used during the Neolithic period. By the Warring States period, diverse metal currencies like knife and spade coins emerged. These early currencies, starting as a commodity exchange to cowrie shells, copper coins, paper money and modern Chinese currencies and digital currencies shows how centralized power developed the most influential monetary system in the world.
