The secret realm lay quite a distance from the true Outer Sea.
Thus, the sea demons that appeared here varied in strength. The vast majority were only at the Second Order, something the secret realm's defenders could generally withstand.
What truly forced them to call for aid were the occasional auras of Third Order sea demons. Sea demons of that strength could not be dealt with by anyone below the Joint Aperture Realm.
On an island several dozen miles from the secret realm entrance, Chen Fei's figure slowly emerged.
Chen Fei landed on the island and tapped forward with his right foot. Origin force flowed, and an array took shape in the blink of an eye.
A medicine bottle appeared in Chen Fei's hand. He removed its stopper, and a strange fishy stench drifted out.
Chen Fei poured the liquid from the bottle into the array. The faint fishy smell immediately became rich and dense, spreading in all directions.
Chen Fei sat cross-legged nearby, closed his eyes, and quietly waited for the results.
The liquid in the bottle was refined from the blood of a demonic beast mixed with spiritual herbs. It held an enormous attraction for other demonic beasts.
Yet when most martial artists hunted sea demons outside, they would not choose such a medicinal liquid. It was not because they thought it ineffective, but because they feared it would work too well and draw too many sea demons.
Within the sea, the ones truly favored by heaven and earth were, in fact, those sea demons. It was difficult to say just how many of them lurked in the deep ocean.
If the medicinal liquid caused sea demons to swarm over, then in the end, it would no longer be martial artists hunting sea demons, but martial artists being