One million soul units, when converted, that's one billion Soul Power, which can be exchanged for one hundred billion soul banknotes.
One hundred billion soul banknotes may seem small, but actually, one hundred billion is quite a lot. Many Emperor Sovereigns don't even have one hundred billion.
Most importantly, apart from Mu Rufeng, no one else uses Soul Power to exchange for soul banknotes.
Except for Mu Rufeng, it's never been done before.
Just look at Zhao Chen, you can tell from his attitude when Mu Rufeng uses soul units to exchange soul banknotes, it's unusually good.
He almost had "Big Head comes again" engraved on his face.
However, this is Rule Power, surely someone has exchanged it before, Mu Rufeng doesn't know if it's expensive.
But Mu Rufeng himself thinks it's not expensive simply because he has an abundance of Soul Power.
