Suddenly, behind him, a horrifying aura suddenly surged up; this aura was so terrifying, it felt even stronger than the aura of Immortal Lord Han Feng and Immortal Lord Shuangji!
Moreover, this aura came straight for his back.
This aura was incredibly terrifying. Even with his current physical body, if he took this hit head-on, he feared he would be severely injured in an instant.
Cao Zhen had no choice but to instantly redirect all his immortal energy into his Immortal Palace. In an instant, numerous Great Walls emerged from his Immortal Mountain, and the mountain enveloped him completely.
With his full exertion, his Immortal Mountain, which stood at 9,999 feet tall, was fully revealed.
Boom!
Cao Zhen only felt a continuous, horrifying impact on his back. Numerous Great Walls kept collapsing, yet the sword in his hand still thrust forward.
