Force
He was finding methods of breaking his Dao past the artificial cap it was placed under.
If he could reach the end and regain the abilities of his Inner World. And, of course accumulate enough Faith to withstand it… he was confident that his Dao would break past the pinnacle of the Found Dao Realm.
He couldn't help but wonder what would happen then. Would there be a qualitative change?
Ryu actually wasn't certain of this. That was because he wasn't sure if Peak Founding Dao was an official metric, standard across all worlds… or if it was something else.
Take the Dao God Realm, for example. He had only just learned that not all of them were created equal and that there were large gaps that broke laws of reason.