The black rainstone was a very special type of stone. This stone had different applications. It could be used to refine one's body and also for forging strong divine artifacts. It could also be used as a material to build arrays.
However, as there were many other substitutes for these black rainstones—although they were rare, they were not considered that expensive. Quite often, they could be bought at auctions for a few million divine roots. For great family clans, a few million divine roots was not considered a big amount. To Jiang Yi, however, it was an exorbitant price.
Jiang Yi took out all the interspatial rings that he possessed as he started to organize the treasures within them. The Poison Spirit made a rough estimate that excluding the Pandan and the tea leaves that Jiutian Ze had given Jiang Yi, all his possessions were only worth more than a million divine roots; that was a huge gap from the required five million divine roots.