The Inner Landscape Grounds.
After a little exploration, combined with what the book had recorded, Jiang Ning roughly understood their wonders.
They were a mysterious place that could greatly accelerate the growth of one's mental strength.
They were also a place where cultivation could be sped up.
From his own experience just now, practicing the moves of the Seven-Star Demon-Subduing Sword had given him some insights.
Shen Yue Ru's feedback pointed to the same conclusion.
Studying swordsmanship in the Inner Landscape Grounds could indeed bring some improvement.
And judging by how time had passed in the Upper Yang Inner Landscape, as well as the book's account, time flowed at a vastly different rate in the Inner Landscape Grounds than it did outside.
A day might pass within while only an instant passed outside.
That enormous difference could truly allow someone to advance a thousand li in a single day.
Only after putting theory together with experience did Jiang Ning understand why the book said that a true prodigy must have opened Inner Landscape Grounds of their own.
Techniques such as swordsmanship could be practiced and improved within them.
That would create an enormous gap between such prodigies and ordinary ones.
A sword technique that took an ordinary prodigy years, or even longer, to master
might take a prodigy with Inner Landscape Grounds just as long inside them, while only a few days passed outside.
The amount of time saved was staggering.
Not to mention that opening Inner Landscape Grounds would make the growth of one's mental strength astonishingly rapid.
And mental strength was vital to both the Elder Immortal Dao and today's Martial Dao.
Jiang Ning looked at his Inner Landscape Grounds, now twenty zhang across, and was filled with emotion.
Having successfully opened his own Inner Landscape Grounds, he