Re-cultivating martial arts had already become an impassable path.
Xu Yan's answer was to convert his Grandmaster realm cultivation into the Innate Realm cultivation, and the first step was to refine the Innate True Qi.
It is similar to the Inner Qi of martial arts, yet it is purer, more mysterious, more potential, and stronger.
According to Xu Yan, the Inner Qi of martial artists in the Inner Domain was essentially True Qi, but they practiced a pseudo-martial arts, thus it was pseudo-True Qi.
Because of this, it lacked the purity and power of Innate True Qi.
Xie Lingfeng found this reasonable and had no doubts about it.
But he did not know how to refine his martial arts Inner Qi into Innate True Qi.
Xu Yan could not provide a method either, but he told him that once he broke through to the Innate Realm and understood its mysteries, he might know the method to refine and enhance it.
Before breaking through the Innate Realm, he wanted to comprehend Sword Intent.