Condensing the twentieth rule requires spending 5,632 units of Rule Power.
Condensing the thirty-first rule requires 5,632 + 5,632 units of Rule Power, with each additional rule following this pattern.
The subsequent rules are the same, following this pattern.
The further it goes, the more Rule Power will be needed to condense new rules.
However, it seems that he, somehow, cannot condense a rule of his own.
He just refined the first rule after reaching the Emperor Sovereign Peak, but there was no intention to condense a new one.
Instead, this Rule Power was directly absorbed by his World Level Rule Power.
That is, it was absorbed by the [Heavenly Dao Rules] rewarded by the Heavenly Dao Continent.
This reminded him of what Wulan had said: she hadn't condensed a rule, but was only a step away from condensing a World Level Rule.
