![](http://www.ecns.cn/hd/2021/08/11/15a50c52ac1949f3a221fc85f9b7bd0f.jpg)
Aerial photo taken on August 9 the ruins of Guanzhuang in Xingyang City, Zhengzhou, central China's Henan Province. (Photo/ VCG)
Chinese archaeologists from Zhengzhou University have confirmed that a bronzeware casting workshop at the ruin had begun to mint standardized metal money around 640-550 BC, making it the earliest known coin making workshop in the world.
A paper on the coin workshop has been published by Antiquity, a peer-reviewed journal of world archaeology.
![](http://www.ecns.cn/hd/2021/08/11/f3d041bdae9b4ecab3d85b9d016abbb4.jpg)
Aerial photo taken on August 9 the ruins of Guanzhuang in Xingyang City, Zhengzhou, central China's Henan Province. (Photo/ VCG)
![](http://www.ecns.cn/hd/2021/08/11/d50edf52991c43f584dd730d42760d46.jpg)
Aerial photo taken on August 9 the ruins of Guanzhuang in Xingyang City, Zhengzhou, central China's Henan Province. (Photo/ VCG)
Chinese archaeologists from Zhengzhou University have confirmed that a bronzeware casting workshop at the ruin had begun to mint standardized metal money around 640-550 BC, making it the earliest known coin making workshop in the world.
A paper on the coin workshop has been published by Antiquity, a peer-reviewed journal of world archaeology.