Gambling stones are risky!
Everyone knows that.
Even if the stones you choose are foggy. It doesn't mean you win.
Fog means that the stone will not be empty. But that doesn't necessarily mean something good.
For example, could it be a rule stone? Or a low-grade herb? Or is it a common ore of low value?
This is possible.
So if you change hands when there is fog, there is no risk. You will make a fortune.
Of course, if someone buys a foggy stone and cuts out the real good stuff, it doesn't belong to you. Who made you transfer it?
On the spot, along with bids, other...