In ancient times, a copper coin was worth one coin. In ancient China, coins were divided into different characters, such as Wen, Wu, Xuan, Huan, Bao, etc. Each character represented different values and uses. The word "Wen" represented the face value of the copper coin. And "one point" referred to one hundredth, which was usually used to indicate the weight or volume of small items. Therefore, in ancient times, a copper coin was worth one coin.