Walking slowly on the edge of the not dim underground river, Cheng Fei held the Chijing long knife in his hand, although until now, he had not encountered any great danger, but he still did not dare to be careless.

In this lost jungle, there are too many dangers to hide, and although he has some martial arts abilities, he is far from reaching the level of being unforbidden.

As a not-so-high-level adventurer, exploring such a mysterious underground river space alone is a very dangerous thing, and if you are not careful, your life will be in danger.

This underground dark river is long and big, but it is also the same as the river on the ground, there are deep water areas and shallow water areas, Fang Yan is now walking in the shallow water area on the edge, but he walks against the shore and does not go into the water, deep water and shallow water are not much different to him.

Along the way, I have seen the skeletons of several big fish, the smallest one is two or three meters long, and the big one is even six or seven meters.

Ahead, suddenly, a strange color appeared in front of Cheng Fei's eyes, and his huge spiritual perception captured an extremely rich energy fluctuation in an instant.

"There are treasures!"

As soon as his mind moved, Cheng Fei immediately turned his body longitudinally, that is, he had already walked more than 100 meters, turned a corner, and suddenly opened up in front of him, it was actually a huge underground space.

The surface of the underground river has become wider here, and by the river, there is a sandy beach covered with fine sand, and on the beach, there are a large number of river mussels scattered, and two shells are closed one by one, and some water columns are raised from time to time.

These river mussels are no more than the size of a bowl, but what really attracts Cheng Fei's attention are the big ones, each of which is the size of a tabletop, much larger than the sea mussels in the ocean.

In the very center, there is also a super huge, almost bigger than a room, absolutely enough to be called the king of the mussels!

"Here......... How can there be such a big mussel?"

He was slightly stunned in his heart, but soon, Cheng Fei figured out the trick, these river mussels live in this underground dark river, not like in the ocean, there are many natural enemies, plus the lost jungle is different from other places, there seems to be an inexplicable force that can make any animal and plant grow extraordinarily huge.

Rats and cats comparable to tigers and leopards, and giant snakes thicker than buckets, these are all precedents, so it is not uncommon for such a giant clam to exist in the underground river.

The source of energy fluctuations is within those giant mussels.

Cheng Fei exuded his spiritual power, constantly exploring and perceiving, and soon, in the body of the giant clam, he found the true source of energy fluctuations, which was actually ..........

"Pearl, it turned out to be a pearl!"

As we all know, pearls are bred by shellfish, especially large mussels that accumulate years, and even shellfish that are not good at producing pearls may give birth to pearls.

Many of the river mussels at the water's edge have been bred with pearls, and these pearls seem to be very different from ordinary pearls, more or less, and there are energy fluctuations overflowing, especially those giant mussels, which are bred out of pearls, not only huge in size, but also huge in energy fluctuations.

"It seems that this time I really met a good baby!"

A smile couldn't help but appear on his face, at the moment, Cheng Fei stepped forward, his heart moved, and his spiritual power instantly enveloped all the river mussels on the river beach, except for the dozen or so large river mussels with a body size that exceeded the table, the other river mussels were dominated by his spiritual mental power, and the shells of these river mussels automatically opened, and the milky white, pink, or pitch-black pearls of various colors automatically broke away from the river mussels and galloped towards Cheng Fei.

These pearls of various colors, the small ones are only the size of rice grains, and the big ones are the size of goose eggs, each color is gorgeous, and it is a piece of warmth to start, which is definitely the top grade among the pearls, not to mention that it is used for medicine, it is to take it out and sell it as jewelry, but I am afraid that it is also priceless!

If it was the first time he had an adventure, Cheng Fei might have cared about the economic value of these pearls, but now, as a mature adventurer, an adventurer who had already embarked on the path of cultivation, what he cared about was the abundant energy contained in these pearls.

Ordinary pearls, after being ground into powder, can still be used in medicine, is one of the rare precious medicinal materials, not to mention these pearls containing abundant energy?

With the miraculous skill of Zhantian Qi in his body, Cheng Fei could completely devour these pearls as food, and then refine them into the purest energy to assist his cultivation.

Perhaps, the energy contained in a small pearl is limited, but the amount is huge, and together, it is a considerable income, at least, enough to make his Demon Buddha Golden Body Technique go further.

In the flip of his hand, his spiritual power returned, and all the pearls were incorporated into the mustard seed space. Cheng Fei smiled with satisfaction, but he was not in a hurry to leave.

Seriously calculated, these small pearls are not the biggest harvest of this trip, what really makes Cheng Fei look forward to it is the dozen or so giant mussels.

Stepping forward, reaching out and gently knocking on the shell of the super-large river mussel, the big mussel suddenly slowly opened its closed shell, Cheng Fei followed the induction of spiritual power, and soon found five giant pearls the size of an adult's fist, this huge pearl, the whole body is milky white, crystal clear, and the colorful colors shine, exuding a warm warmth.

Cheng Fei took one and held it in his hand, and in an instant, he could clearly perceive that this pearl seemed to have a strong spirituality, and was slowly absorbing the free energy between heaven and earth.

The spiritual power diverged, followed his hand, and probed into the inside of the giant pearl, and in an instant, Cheng Fei detected an extremely rich and precise energy, which was ten times more abundant than the mutated zombie crystal nucleus of the doomsday world, or even dozens of times, especially, the energy contained in this giant pearl has been tempered by the pearl itself and the passage of thousands of years, it is already very pure, whether it is directly used to absorb or used for medicine and alchemy, it is an excellent choice!

Therefore, these giant pearls, no matter where they are, no matter what they are used for, are definitely extremely precious treasures, and have a huge value that cannot be measured by money.

Especially for a cultivator like Cheng Fei, there is no soil for cultivation in the local world, and even if it is a trillion-dollar fortune, it is definitely not worth such a giant pearl.

"Good luck, today is really auspicious!"

In the middle of his hand, he put away all the pearls of the giant mussel character or the giant mussel, and then, according to the law, he took out all the pearls in the dozen or so giant river mussels.

Maybe it's because these big mussels have lived in the underground dark river for too long, and no one has ever come, so they all have pearls, as few as one or two, and as many as three or five, and more than a dozen big mussels have been collected, and Cheng Fei has found forty-one pearls that are more than the size of an adult's fist.

In the end, Cheng Fei came to the largest giant mussel, and as he concocted, the giant mussel quickly opened, and then, what caught his eye was a scene that made him ecstatic.

"God, this pearl is ........... It's a little too big!"

Before this, Cheng Fei had never thought that a pearl could grow so big, twice as big as a basketball, transparent and white, crystal clear, as if there was a liquid flow inside, it was so rich that it had been liquefied, even if Cheng Fei touched it, he also felt a shock.

The energy in this is too rich, much stronger than all in his body, and the purity of this energy is even more eye-catching.

"That's really....... An unimaginable catch!"

couldn't help but sigh, Cheng Fei's face was full of surprise, after all, such a treasure, I'm afraid that even in this lost jungle, it is rare, maybe there are other places, but if you want to get it, you must spend a lot of money, but now, these are all picked up for nothing, it can really be regarded as a big opportunity.

Turning his mind, he looked left and right, and saw that these big mussels that gave birth to giant pearls had grown for tens of millions of years, perhaps, they also had spirituality, and subconsciously, he wanted to put them into the mustard seed space, but this time, he was disappointed.

The mustard seed space cannot store living creatures!

At least, for now, this is the case, Cheng Fei suddenly felt helpless, he had already collected the pearls, there was no need to harm the lives of these giant mussels.

The spiritual power was radiated again, and Cheng Fei sensed that there were still a lot of river mussels in the underground river, but unfortunately, there were no more such large mussels that exceeded the size of the table, which made Cheng Fei slightly disappointed in his heart, but immediately, he couldn't help laughing at himself, and secretly sighed in his heart: The human heart is not enough to swallow the elephant, and I am afraid that I am a little enchanted by doing this!

No way, this kind of big harvest that is almost unearned is an irresistible temptation for anyone, and it seems that there is nothing surprising to be caught in it. But this incident gave him a wake-up call, letting him know that his mental cultivation was still very lacking.

"It's time to go, move on!"

After an adventure and a lot of gains, Cheng Fei's heart has more expectations for the road ahead, at the moment, hold back his mind, no longer think more about the things of the giant clam and move forward by himself.

As he continued to move forward, Cheng Fei saw the abundant aquatic products of this underground dark river, which was really outrageous, along the way, Cheng Fei alone had never heard of fish, and he saw no less than dozens of species, the small ones were less than an inch, and the big ones were more than a few meters or even more than ten meters, and the body was spotted or spotted, the colors were gorgeous, it was really strange, in addition, there were all kinds of crabs, shrimp crickets, turtles and other animals crawling around the river, although it was not a blessed place, but it also had a unique scenery.

Finally, as Cheng Fei continued to go deeper, a "boom" sound came from not far away, the further he went, the more rapid the water flow of the underground dark river, Cheng Fei secretly guessed in his heart, knowing that it might be the drain outlet, and he walked forward for another hundred or ten meters, and sure enough, it was so.

In front, there is a section of the cliff, the water in the underground dark river flows down the cliff, forming a huge waterfall, more than ten meters below, to rush out of a huge pool, there are hundreds of zhang square, the pool water is glowing with a trace of pure cyan, it looks like a huge cyan gem, inlaid on the earth.

Cheng Fei stood on the side and looked, some big fish were shuttling in the rapids, although there are many kinds of these fish, but those who can shuttle here are all some big fish, the small ones are two or three feet, and the big ones are more than two or three meters to five or six meters, and they are absolutely amazing when placed outside.

In a vertical figure, he jumped down from the cliff, and in an instant, Cheng Fei came to the surface of the cyan lake, and his spiritual power supported his body, standing on the surface of the water, like the legendary immortal who descended to the mortal world. Then, in his eyes, two sharp gazes were instantly projected out under the blessing of spiritual power, and the spiritual perception that emanated, like radar, quickly swept around.

At this moment, suddenly, under the water, a huge shadow appeared, which suddenly reflected in his spiritual perception, and at the same time, a terrifying coercion emanated, reaching the depths of people's hearts.

Cheng Fei couldn't help but be shocked in his heart, his feet moved, and the whole person had already crossed a distance of dozens of zhang, retreating towards the edge of the lake, in his spiritual perception, the shadow was hundreds of meters long, it was definitely a behemoth!

Well, it was a behemoth, and even as an adventurer who had traveled to three different worlds on an adventure, it was the first time he had seen such a huge creature.

Carefully landed on the edge of the lake, his spiritual power was emitted, and he leaned towards the bottom of the lake, he was a little curious, what kind of creature was the behemoth under the water, and he wanted to know the depth of the behemoth's strength, in case of conflict, whether he would be in danger.

Just when Cheng Fei's spiritual power was reaching under the water, all of a sudden, those swimming fish by the lake, as if they had encountered something terrible, all scattered in an instant.

"Not good!"

These swimming fish live here all year round, and now they suddenly disperse, they must have encountered some terrifying existence, and in this underground lake, only that big guy has such terrifying strength!

At that moment, Cheng Fei couldn't help but exclaim, his body was about to retreat, and at this moment, on the gradually turbulent cyan lake, suddenly, a huge wave rose high, the sound of the water wave was deafening, and it was about ten meters high in the past, and the wind was blowing, making people almost unsteady!