Equivalent to pocket change.
It's generally used only by mortals.
Ten thousand Immortal Crystals are worth just one Lower-grade Immortal Stone.
The reason why so many Immortal Crystals exist in the Spirit World is that Immortal Mansions fell from the Immortal World and were crushed under Mortal Laws. Lower-grade Immortal Stones shattered instantly, transforming into countless Immortal Crystals.
This is why they became familiar to Spirit World cultivators.
In the Immortal World, however, Lower-grade Immortal Stones are the basic currency unit.
Each Mahayana Cultivator can earn three Lower-grade Immortal Stones per month.
Thus, the value of one Lower-grade Immortal Stone is already quite high.
However, due to Zhou Sui's charm, the other party treated him as a sworn brother in life and death, so they wouldn't regard one Immortal Stone as a big deal.
