Shen Lian observed the underwater palace and did some thinking.
He waved and a ray of light struck ahead. The underwater palace was indeed under some sort of prohibition spell. It diverged from Shen Lian's ray of light.
Shen Lian frowned, he was just testing the waters but realized that the underwater palace was as rigid as an impregnable fortress.
It was built using an unconventional power which was similar but different from what he had learned.
The wonders of Xuanmen has endless of possibilities. The cultivation of the Qi and the spirit itself could generate unimaginable, incredible powers. But this underwater palace's arrangements of unconventional power was not anything supernatural. The entire structure was as solid as the strongest rock ever, the Jinggang rock. Unless one possessed enormous mana and breaks it directly, one would not be able to find any flaws with it.
Even Shen Lian could not detect the flow and changes of the spiritual vigor.