Within the Heavenly Curtain, the crimson light barrier had already been riddled with countless holes from Lin Rui's relentless Thunder Spear bombardment.
With Li He Venerate's deliberate retreat, Lin Tianchen had been freed prematurely, allowing Lin Rui to unleash his full strength against this crimson barrier without restraint.
But to his astonishment, after almost ten minutes of continuous bombardment—launching more than 5,000 Thunder Spears—the crimson barrier still showed no signs of breaking.
Lin Rui's expression grew serious as he pondered. This person who had implemented the Knowledge Barrier… could they possibly be at the Immortal Level and approaching 'Quasi-Abyss'?
—At least 95% mastery of the 'Sealing' Concept! Along with more than 90% proficiency in 'Water Element' and 'Ice Element.'
This individual might even possess an 'Abyss Divine Artifact', as their usage of these Conceptual Powers was abnormally strong.