This mine vein had not been officially mined yet, so it was still unknown how much profit they could get. However, based on Lu Qing's current estimates, it would not be a problem for him to pay 300000 spirit stones a year.
Moreover, he also noticed that there were quite a number of medium spiritual stones in the mine vein. It was estimated that it would not be a problem to mine ten a year.
With such a regular income, he estimated that it would be around four hundred thousand spirit stones.
However, once a top-tier spirit stone was mined, it would be destroyed.
Gui Gui, the exchange rate of a high grade spirit stone to a mid grade spirit stone was not as high as the exchange rate of a low grade spirit stone to a mid grade spirit stone, which was 10000 to one. However, one high grade spirit stone could still be exchanged for 100 mid grade spirit stones.
That would be a million!
However, Lu Qing also noticed something else. It was not easy to mine the ore vein.
