Copper coin is made of Copper. It was produced in the Late Shang dynasty, and had been widely used for a long time.

用铜制作而成的钱币。商代晚期开始出现，并在接下来很长一段时间被人们使用。

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Therefore the substitution of the Shang through the Zhou was not an "unavoidable" outcome, but it was the intention of the Zhou which they realized finally after a long time of strenuous efforts.

因此，周人代商并非是“不得已”的结果，而是周人通过长期努力才最终实现的目标。

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Zhuang ancestors in the long-term production practice and social activities, in order to facilitate the exchange notes and, in the Shang and Zhou dynasties carved on creating a text message.

壮族文字由来壮族先民在长期的生产实践和社会活动中，为了便于记事和进行交流，在商周时期就创造了刻划文字符号。

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