It was Duoduo who first proposed linking Contribution Points with Charging Stones.
In her view, there were two types of core materials currently sustaining the entire Inner World: Origin Material and spiritual power.
In principle, both could be used to create 'a general equivalent'.
However, awkwardly, the former is a building material, the latter is energy; both are consumables, which naturally flawed them in becoming currency.
Origin Material is the foundation of Spirit Communication Art and Yuanling artifacts, possessing a comprehensive recycling mechanism, and is in a perpetual state of 'over-issuance' at this stage, making it unsuitable as a currency due to the risk of inflation.
Therefore, the only quantifiable entities left, branded with Macala's unique mark and capable of circulation, were Charging Stones, or spiritual power.
Even so, it was not strictly a "currency."
