The currency used in the Holy World was holy bills, and all of them were made from the supreme holy force of True Saint Realm experts.

In addition to their supreme holy force, the experts who made the bills laid down supreme arrays on them to prevent Venerable Realm experts from making fake bills. With so many precautions in place, there was practically no way to forge them.

Of course, the holy bills were valuable in their own right. The supreme array was formed with the spiritual qi contained in the world, and they held the heavenly laws the True Saint Realm experts comprehended. 

The value of the holy bill was equivalent to the strength of the world spiritual qi and heavenly law. Therefore the value of the holy bill increased with the strength of...