Shen Xiu did not rest.
The moment Lin Fan closed the door, Shen Xiu sat cross-legged once more and sank his consciousness into his body. What the Thunder Emperor's empowerment had given him was not merely a one-time increase in cultivation; more importantly, it had bestowed upon him insights buried deep within his soul. Those insights were like a treasure trove, requiring him to excavate, digest, and absorb them bit by bit before they could truly become his own.
The cultivation method for the fourth form of the Nine Heavens Divine Thunder Art, "Thunder Shatters the Firmament," was vivid in his mind as a painting. The core of this form lay in the word "shatter"—shatter every obstacle, break every restraint. Unlike the first three forms, which drew upon the thunder of heaven and earth for one's own use, this form condensed one's own thunderous power to the utmost limit, breaking the surface with a single point and using hardness to overcome hardness.
If Thunder Stirs the Nine Heavens was a great net that covered heaven and earth, omnipresent and inescapable, then Thunder Shatters the Firmament was a sharp sword, its edge fully revealed, capable of piercing anything.
Shen Xiu closed his eyes, and the thunderous power within him began to circulate along the route of the fourth form.
Spiritual power set out from his dantian, traveled up his spine, passed through his chest and throat, and finally gathered at the golden mark between his brows. The journey was far from smooth. The spiritual power circulation route of the fourth form was entirely different from those of the first three, requiring him to open three meridians that had never been used before.
Those meridians had been blocked for years, long since shriveled and hardened. When thunderous power surged into them, it