Noah and the Legion as a whole went silent. All the experts who had faced Heaven and Earth's trap needed to cultivate and turn their experiences into part of their power. Those who had remained on that side of the Immortal Lands also had to improve. Luckily for them, the influence that flowed through those lands was the perfect fuel.
Only the weaker troops remained active inside the Legion's domain. They limited themselves to patrol the regions and take care of the magical beasts that the experts had brought from outside their borders.
The Legion's domain had transformed, but the magical beasts didn't care about those features. Noah's influence was a passive effect connected to the mutated laws that filled those regions, so those creatures ended up benefitting from his power without bothering to notice its marvelous features.