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Nowadays, the currency in Monster City has gradually aligned with the human world three years ago.
The adopted currency system includes: Copper Coins, Silver Coins, Gold Coins, and Purple Gold Coins.
Monsters exchange the magic cores, pelts obtained from hunting, as well as magic ore and elemental crystals mined in the wild, at currency exchange centers to obtain the above four types of currency.
These four currencies remain firm in human world because, after being refined by magic or instruments, one can obtain precious materials such as copper essence, silver essence, gold essence, which are excellent materials for creating magic wands and enchanted weapons.
Because of this tangible value, they circulate firmly among humans, elves, monsters, and many intelligent races, which is one of the reasons why Giant Dragons collect them.
Giant Dragons do not collect worthless items as treasures.
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