C322 Mining! Mining!

Bai Zhenyun led a few tens of miners and after inspecting the two large mountains in the territory, he asked: "What is the quantity of Obsidian here? How much can we produce per month?"

An old man with white hair answered: "Reporting to the Patriarch, these two areas contain high level Obsidian and are rich in mines. According to these ten mines, they are worth fifteen thousand Jin per month