For 90% of the cultivation arts in the Nine Provinces, there were no short-cuts. If you wanted to grow stronger, there was only one thing you could do - cultivate. Cultivate to the point where you knew that thing by heart.
It was like the ultimate divine art of the Skyraise Academy, the Grand Universe Formless Divine Art. Its difficulty lay in the learner's understanding of the cultivation art.
However, once they understood, it was enough as long as they cultivated following the prescribed order.
This was the so-called comprehension ability.
And what about this Vast Sea Angry Tides Melody before Sun Mo's eyes?
Strictly speaking, it wasn't a cultivation art. It was a music tune. However, the great teacher who had created this tune was simply too powerful. This was why it had such a terrifying attacking might.
Music didn't differentiate between national boundaries.