In fact, when Xia ruofei found out that there was a large - scale public bid for raw jade stones in Rui Zhou, he was already slightly moved.
Although there was no equipment that could see through the stone Skin and detect the Jade content inside, Xia ruofei had a way to determine whether there was Jade and how much Jade content there was in a raw stone. He could even roughly judge the quality of the Jade.
This method was naturally to use the spirit map scroll.
Xia ruofei had used this trick when he was at the three mountains. As long as he touched the raw jade stone with his hand, the scroll would tremble slightly if the raw jade stone contained the Jade needed for the spirit map scroll. The more Jade it contained and the higher the quality, the more intense the reaction would be.