This protective barrier had been condensed from the vital energy of a peak Primal Spirit Realm expert.
This peak Primal Spirit Realm expert was the Shen Family's Great Elder. His strength was no trifling matter, yet even he could only barely hold on for such a short time.
Moreover, after the protective barrier formed, wave after wave of Shen Xin's attacks crashed down upon it.
However, the instant Shen Xin's attacks struck the barrier, it began to sway and tremble.
Seeing this, terror appeared on Shen Xiu's face. He knew that if he held on for even a little longer, the vital energy of his peak Primal Spirit Realm cultivation would be completely depleted.
But he had no other choice. He could only grit his teeth and endure, because once a Primal Spirit Realm expert exhausted all their vital energy, death would be the only road left.
"Huff, huff!"
At this moment, the attacks only grew more ferocious. Several waves had even already brushed against the peak Primal Spirit Realm expert's body.
Faced with those attacks, Shen Xiu did not dare slack off. He immediately activated the vital energy within his body, forming one high-grade Primal Spirit Realm martial skill after another.
The martial skills flowed from his hands as smoothly as drifting clouds and flowing water, every move carrying astonishing might.
But he also knew that he could not hold back those attacks for long. In the end, he would still be swallowed by them.
"No, I have to get the key as quickly as possible." Shen Xiu stared ahead and said through gritted teeth.
He understood as well that if he delayed any longer, he truly would not leave this place alive.
Whoosh.
Shen Xiu's body transformed into a streak of light and shot toward the Iron Gate