As Li Fan passed by the outer sea wall of Penglai Mountain, he could sense that it must be Penglai Sect's protective array. The water wall was high enough to connect to the sky—but perhaps not quite a hundred zhang exaggerated, it was definitely over a hundred meters tall—and its thickness might extend for several li. Who knows how such a massive amount of water was amassed; it probably could only be explained by mystical laws. Without a doubt, such a sea wall, supported by array formations, would be insurmountable not just to mortals but likely to ordinary beasts as well. It could physically block the vast majority of troubles from the outside world.
Moreover, when Li Fan stealthily tried to control those dark waters using the water-commanding technique, he found that despite his current refined ability in water evasion, he was unable to cause even the slightest ripple. Presumably, one would need a secret method or artifact of Penglai to enter and exit this level of the formation.
