Noah couldn't obtain significant improvements in a short time, but he still trained until he felt that his centers of power had grown a bit.
The breakthroughs were still far away, and his existence was slowly harmonizing now that he was striving for the peak of the heroic ranks. Only his mind continued to remain above his other centers of power.
Those years' training wasn't different from that done while the three organizations were inside the separate dimension. Yet, Noah had something to strive for now, and that quickened the pace of his growth.
Moreover, he was in the outside world. Thirty-seven and the other experts had done an excellent job making sure that the separate dimension always had "Breath", but nothing could compare with the new continent.
Noah had decided to place his training area near that landmass on purpose. He wouldn't choose a worse place just because it was safer.