Noah had gone through rough periods inside the separate dimension, and his cultivation level didn't improve by much compared to his usual training speed.
Yet, he had used that time to meditate. Noah couldn't test his abilities inside the separate dimension, but his journey through the last stages of the sixth rank was more than a mere slashing session.
Techniques were useful to cultivators, but they had to nurture their individualities to obtain their power. King Elbas had proved that already. He had to lose all his items and disposable weapons to complete his path.
Noah had always owned various techniques that only expressed certain aspects of his individuality. Sword Saint had trained him so that he could put his entire existence into his slashes, and Noah had completed that phase when he reached the liquid stage.