Chapter 107: Another Spirit Stone Vein

Lu Chen quickly swam out through the gap and soon reached the fissure at the center of the annular deep pit. He did not enter immediately but instead used the tactile cells on his scales to carefully sense the changes in the water flow. Ever since his evolution and upgrade to the fourth rank, Lu Chen's body had undergone earth-shattering changes. The sensitivity and range of the tactile cells had increased by several times.

Unsurprisingly, within a radius of a hundred meters, he could clearly perceive the messages sent by a small fish over ten centimeters long.

Soon, Lu Chen received subtle abnormal fluctuations from the depths of the fissure.

After confirming the specific location, he whipped his tail and swam into it.

As expected, those electric eels also detected that there was prey entering the cliff fissure. They crawled out one by one from the pit caves and swam rapidly toward Lu Chen's position.

Seeking death!

Before the opponent could begin electrocuting, Lu Chen struck first.

His mouth opened wide, and another blood-red compressed energy bullet was spit out.

With Lu Chen's current strength and abundant stamina, firing three to five compressed energy bullets in succession posed no problem. Moreover, he could control the amount of energy injected depending on the situation.

It was no different from those giant algae tentacles before. Many electric eels could not react in time and were blown to pieces. Some that were farther away, although their bodies remained intact, fell into a dazed state.

Taking advantage of his illness to deliver the fatal blow!

Lu Chen quickly swam to the vicinity and used his sharp claws to strike one after another, individually killing the surviving electric eels.

So close, he finally saw the specific appearance of these creatures clearly.

They were nearly two meters long, with gray-black, round, stick-like bodies. Their heads were covered with pits and bumps, filled with sharp teeth, and a few whiskers at the corners of their mouths. Their abdominal fins extended from the gills to the tail.

At first glance, they resembled the snakehead in freshwater, sinister and fierce.

After the hunt was complete, Lu Chen opened his mouth and swallowed a piece of flesh and blood.

These days, he had been eating ordinary animals, and he was already tired of it.

"Prehistoric mutated electric eel, can provide 2600 energy points..."

It was indeed a mutated electric eel, but what did the system identification plus "prehistoric" mean? Lu Chen immediately recalled the prehistoric tyrannical salamander in the underground cave.

According to his previous understanding of "prehistoric creatures," these should refer to creatures that lived before human civilization appeared.

However, Lu Chen felt it was not that simple. If this were the case, sharks should also be considered prehistoric creatures.

After all, sharks had appeared hundreds of millions of years ago.

But the tiger shark he had hunted before had not received similar text prompts.

Lu Chen could not find an answer, so he temporarily set aside this doubt, continued diving down along the deep-sea fissure.

With the mutated electric eels no longer harassing, everything went smoothly, and he directly dived to the bottom of the fissure.

Lu Chen had originally thought the cold seabed would be pitch black, but it turned out even more unexpectedly. After the fissure extended tortuously downward for over a hundred meters, it suddenly became wide, with faint light seeping out from below.

Upon entering, he discovered many strange algae growing on the surrounding reefs that emitted blue fluorescence. The light he had seen before was emitted by them.

What kind of place is this?

Seeing the suddenly standing giant stone door in front, Lu Chen once suspected he was suffering from decompression sickness and hallucinating.

In the hundreds of meters deep sea fissure, there was suddenly a gate over ten meters high and seven to eight meters wide, built from large chunks of wide stones.

With the help of the surrounding fluorescence, Lu Chen saw it very clearly. Although the surface of the giant stone was covered with a thick layer of mud and sand, the original appearance could not be seen, but from the shape, it was definitely a man-made object.

Lu Chen extended his sharp claws and scratched the surface of the giant stone a few times. Indeed, there were carved traces. He did not know what kind of stone this door was made of, with a hard texture.

After clearing the mud and sand on top, there were no traces of corrosion by seawater.

The surface of the giant stone was carved with some complex patterns and text. Lu Chen got close and inspected it for a moment, confirming he did not understand.

However, he had a faint guess in his heart that this underwater stone door definitely was not made by Blue Star humans.

The reason was simple: ancient people did not have this capability, modern people had the technology, but no one would be idle enough to dive into a few hundred meters deep sea trench to make a weird door.

Or mermaids?

Lu Chen thought of the mermaid skeleton he had found in the giant algae forest before.

Previously, he had thought these guys would live in the fissure seabed, but now using the fluorescent algae to probe around, he found no biological existence, nor the spirit stones he had been expecting.

How could that be?

Lu Chen was somewhat unwilling to give up. He searched the seabed repeatedly and confirmed there was no spirit stone.

Or perhaps there had been spirit stones originally, which were swallowed by those electric eels?

Lu Chen's heart moved slightly, and he immediately waved his sharp claws to dig.

Soon, he sensed the familiar aura emanating from the ground.

One, two, three... Looking at the spirit stones revealed in the mud and sand, Lu Chen's heart naturally became exceptionally excited.

His guess was completely correct; wherever creatures mutate, it is related to the spirit veins nine times out of ten.

These spirit stones were dark red in color, very similar to those in the mermaid necklace.

"First-grade spirit stone, can provide 386 energy points"

"First-grade spirit stone, can provide..."

After swallowing a few spirit stones, Lu Chen discovered that although they were also first-grade spirit stones, their quality was slightly inferior to those produced in the deep pond, and the energy points they contained were lower.

In the following days, Lu Chen transformed into a miner, occasionally diving to the seabed to mine spirit stones.

As for that stone arch door, he had studied it for a long time but had to give up, unable to see any clue.

What's more magical to Lu Chen was that piece of giant algae forest; every time he dived, the other party would clear a path.

It seems these guys really have high IQ; after being educated by the compressed energy bullets, they had completely memorized their own scent.

He stayed here for almost a week, and the shallow underground spirit stones had been swept clean. As for the deeper levels, there must be spirit stone veins, but Lu Chen could not continue mining.

He had once imagined using compressed energy bullets to blast open the reefs and then mine deeper.

After a slight thought, he abandoned this tempting idea.

Mainly, the seabed terrain is complex, and he does not understand professional mining knowledge. Once entered, if the mine collapses, he might be buried deep in the seabed.

It is not worth it for a mere amount of spirit stones.

It has been a while since he went out, and it is about time to return to the Deep Pond Valley.

During this time of mining at the seabed, he had an inexplicable feeling in his heart, as if something big was about to happen.

Half a day later, Lu Chen re-entered the Madura Primeval Jungle.

Afraid of human surveillance near the river mouth, he specifically detoured hundreds of miles away and entered from another river quietly.

Daytime hidden, nighttime active, it took him two days, and Lu Chen returned to the underground cave.

Seeing that the four little guys were fine, he finally relaxed.

It seems those humans focused all their attention on himself and did not come looking near the valley. Or they searched but did not find that three unusually different estuarine crocodiles were still inhabiting the underground cave.