Pig-Faced Mask!

"Red Crystals…" Wang Baole started thinking. He wasn't clear what these crystals were, but the fact that they were being used as hard currency meant that they must be rare. That it was a rare resource whose value was recognized by everyone meant that its value had something to do with its use for one's cultivation.

He had guessed right. Xie Haiyang soon explained to him the reason for the Red Crystals' worth. The crystals were mysterious items that could speed up one's advancement in cultivation once a cultivator reached the Planet realm. The origins of the crystals were mysterious and unknown, and only the Never-Ending Clan could produce them. A fixed number of crystals were produced and circulated throughout the Never-Ending Dao Domain.

The clan had technically gained complete control over the economy in the Dao Domain.