The number of the Divine Mysterious Court's Shield Guard Army was unclear, but only a little over a hundred were dispatched for the Battle of the Kings, and the Shield Guards also had terms of service.
This meant that every thirty to fifty years, the Divine Mysterious Court would have to commission at least a hundred sets of Mountain Copper Plate Armor, requiring a total of one hundred thousand catties of copper—not including the loss during forging.
And this was merely what the Divine Mysterious Court needed; the Divine Mysterious noble class also required this extraordinary metal.
If Divine Mysterious needed all this copper, what about the other Earth Countries?
More importantly, the development and circulation of commerce also required metal coins as a foundation.
In this medieval era with limited production capacity and non-widespread ironware, metal coins were already quite expensive.
