Ryu didn't know what to say when he heard these requirements.
The Natural Breath Realm was the very limit of the Natural Enlightenment Realm. In Sacrum it was paired with the Sky God Realm, but in the True Martial World, the standard that he truly wanted to reach, it was on an entirely different level. Even Dao Gods might not reach such a standard.
In the past, Ryu had wondered why it was Natural Enlightenment Realms were so much more difficult to progress than Mortal Endowments. But now he knew that it was likely related to the fact those individual realms represented something entirely different.
For example, the Mortal Endowment comprehensions were divided into Heir, Impose, Ruler, Small Realm, Dominion, Divinity and Deity. However, the last stage, the Deity Realm, also known as the God Realm, was further divided into nine pieces in the True Martial World.
However, the Natural Enlightenment Comprehensions were not divided like this at all.