C658 What's the Use of the Artifact Shadow

Shan Zhongping's expression was also somewhat ugly as he said with a bitter smile, "Brother Ning, We have all studied the runic instruments that you made later on. But to be honest, we could understand it when we dismantled it. But why would it have such an effect when it was put together? We don't understand at all. It's not a problem for us to duplicate it