Ling Yunpo drilled out of the stone chamber and followed these little monsters all the way. After twists and turns, he saw that the terrain was getting lower and lower.

Soon, they arrived at the second cave.

When the stone door was opened, highly concentrated salt water gushed out.

"Salt! Salt! Salt!" The little demons cheered three times and then quickly closed the stone door.

Before the stone door closed, Ling Yunpo looked carefully and saw a water-gathering magic circle carved on the floor inside the cave.

The so-called water-gathering array extracts water from the water source and transfers it to other places. For example, the pools in many sects’ residences rely on water-gathering arrays elsewhere to provide fresh water to prevent the water from becoming corrupt and smelly.

It is worth mentioning that the water gathering array will only extract pure water. As for the algae, floating objects, toxins, and even fish in the water, they will not be affected by the array.

Thinking of this, Ling Yunpo has completely understood the mechanism:

The water-gathering array draws a large amount of water to other places, and the salt is naturally retained, causing the salt content in the remaining water to rise rapidly.

But what exactly do they do with all that salt?

If the purpose is to maintain survival, relying on the salt to "induce sweat" in the monks is probably not enough.

Ling Yunpo suppressed his curiosity and continued to follow the little demons downwards. After many twists and turns, they soon arrived at the third cave chamber.

The stone door of the third cave chamber opened, and Ling Yunpo looked in hastily. He saw countless "catkins" floating inside, so dense that it was enough to make anyone with trypophobia vomit.

"Eggs! Salt! New life!" The little demons shouted three times again, as if they were performing some religious ceremony.

"I see." Kunlun Jing exclaimed, "They are marine monsters after all. Although they can survive in freshwater environments, their eggs and young cannot."

"So we need to use this little bit of salt to simulate the saltwater environment of the ocean in a small, enclosed space, so that the newborn individuals that do not yet have demonic powers can hatch and grow smoothly."

"So this is its purpose." Ling Yunpo also suddenly realized.

Although the salt content is small, a relatively stable concentration can be maintained as long as the space is small enough.

It's even the same as the "old brine soup" in some stores. Maybe the salt water in the incubator has not been changed for hundreds or thousands of years, and they just keep adding salt...

Thinking of this, Ling Yunpo suddenly shuddered.

I can't think about it anymore, it's a bit disgusting...

He continued to move forward with the little monsters, who were extremely excited as if they had become fathers and mothers, and soon arrived at the fourth cave chamber.

As expected, the fourth chamber was much larger than the third, and it no longer contained egg bands, but the larvae of many aquatic organisms.

The ones swinging their tails flexibly are small fishes, the ones constantly bending their bodies up and down are small shrimps, the ones paddling leisurely are small turtles, and the ones swimming freely left and right are small crabs... It's like an ecological aquarium.

Ling Yunpo had a friend in his previous life who kept many fish at home, so he was able to recognize it at a glance.

"Rebirth! Continuation! Hope!" The little demons shouted three times as usual, and after completing the ceremony, they hurried away.

Is it coming? Ling Yunpo was cheered up.

He had been following these monsters for so long just to find the location of Hai Bodhi.

Ling Yunpo doesn't intend to miss the secret medicine for cultivating the Huafu that can be used for thirty years!

Following the little demons to the bottom of the cave, they saw the fish-man priest sitting on a stone platform, with his jade scepter placed flat on his knees, meditating with his eyes open.

Fish don't have eyelids, so this guy has his eyes open and it's unclear whether he is awake or asleep.

But soon, Ling Yunpo realized that it had woken up.

Because the little demons talked all at once and recounted the previous inspection situation, the fishman priest nodded slightly.

Ling Yunpo watched coldly from behind with bated breath, until the little demons all said goodbye and left. Then he secretly pinched the Dao formula, thinking, should I use the North Pole Thunder? Or directly use the Five Elements Divine Light? Or use the Qingping Sword?

"Since our distinguished human guest is here, why don't you come in and have a chat?" The fish-man priest suddenly said, using a rather awkward human language mixed with many ancient characters.

Since Luo Yan had learned ancient characters in Yuqing Temple, Ling Yunpo could barely understand it and was slightly stunned at the moment.

Did it spot me? Is it bluffing?

Ling Yunpo secretly took a half step back, only to hear the fishman priest say:

"Why retreat? Your Excellency, you can use your spiritual sense to investigate. My cultivation level, in human terms, is only at the Marrow Cleansing Stage. I am definitely not your opponent."

This guy didn't trick me, he actually discovered me... Ling Yunpo thought to himself, and asked Kunlun Jing again:

"A Jing, are there any array traps?"

"No." Kunlun Mirror answered quickly.

Ling Yunpo secretly made a spell and said:

"How did you find me?"

"Water flow," the fish-man priest replied, "The honored guest is upstream, and the salt in the water flow tells me of your presence."

Ling Yunpo entered the stone chamber without looking around. He just stared at the fishman priest and said:

"You demons...are quite bizarre."

"We are just struggling to survive." The fishman priest said slowly, "In the past, the demon tribe retreated back to the Eastern Emperor Realm. Four ancestors were left behind by the tribe due to injuries, so they hid at the bottom of this lake to recover from their injuries."

"This freshwater environment is not suitable for our four tribes to reproduce. In the early years, there were rock salt deposits by the lake, but they are gone now."

Ling Yunpo hesitated for a moment and said:

"I won't lie to you either... Where is Hai Bodhi?"

"I will offer it with both hands." The fishman priest said slowly, "How about you wait a moment and listen to what I have to say?"

"Do you have any sect power? Only my clan can cultivate this sea bodhi. Even if you kill all my people here, it will be of no benefit to you."

"But if you are willing to spare our lives, we are willing to continue to provide you with Sea Bodhi. This thing is nothing to us aquatic people, but it is of great use to human cultivators."

"You have a good plan." Ling Yunpo was immediately interested and asked tentatively, "What is the use of this Sea Bodhi? Tell me in detail."

"Of course." Seeing his expression relax, the fishman priest said gently, "The human race makes golden elixirs, and the demon race makes demon elixirs. To achieve perfection, you need to gather the spirits of the five elements, none of which can be missing."

"Golden Spirit is the secret medicine of ore; Wood Spirit is the secret medicine of grass; Water Spirit is the secret medicine of true liquid; Fire Spirit is the secret medicine of heat and fire; Earth Spirit is the secret medicine of earth and stone."

"Although this sea bodhi grows at the bottom of the deep sea, it is formed by the deep grass absorbing the geothermal heat from the deep sea. It is the world's first-class fire spirit secret medicine."

"Whether you take it for yourself or pass it on to your friends or juniors, or trade it with others, it is absolutely worthwhile. If you encounter a cultivator who lacks fire in the five elements, you can even make a fortune."

It told Ling Yunpo about the benefits of it, and Ling Yunpo's mind raced as he started to think.

Could it be that the "perfect elixir" mentioned by the fishman priest refers to the first-grade golden elixir? Gathering the purple mansion secret medicine rich in the five elements of spiritual energy is the key threshold to forming the first-grade golden elixir?

Come to think of it, I have taken several kinds of five-element secret medicines.

The main ingredient of the gold-mercury elixir is certain rare minerals, which contain abundant gold spiritual power.

The golden juice and jade liquid come from the blood-colored red grass, which is rich in wood-type spiritual energy and is endless.

The thousand-year-old stone milk, condensed from stalagmites and stalactites, contains a large amount of pure earth-type spiritual energy, but it contains too many toxins.

He recalled the above three types carefully and found that the spiritual energy in them did have obvious five elements attributes.

Indeed, now with the addition of Sea Bodhi's fire spiritual energy, there are four of the five elements, and only real water is missing.