The deep pool, I don't know how much!

With Fang Yan not stopping to dive, the pool water became colder and colder, and in the end, it was even cold to the bone, so cold that he had to raise his qi and blood to the highest level, so that he could barely resist the invasion of the cold water pressure.

The underwater vision was very blurry, but Fang Yan could still vaguely see a lot of swimming fish, constantly moving in the lake.

Fortunately, although these swimming fish were fast, they were not very aggressive, otherwise, Fang Yan would not dare to venture into the water to explore this deep pool.

With all his efforts, when Fang Yan dived to the bottom of the stream, although his eyesight was blocked, his ear power was still as usual, and he could clearly hear that under the bottom of the pool, there was the sound of water flowing continuously.

"There's a dark river down here?!" Fang Yan was taken aback, and immediately searched for a while at the bottom of the pool, and after a long while, he finally found a big hole next to an underwater rock, which was not too big, but it seemed to be bottomless, like a terrifying mouth, waiting to devour Fang Yan.

At the edge of the hole, there are still some traces left by the friction of the fish, smooth and smooth, it seems that there are no fewer fish in and out of the hole every day, the hole is not big, the diameter is only about one meter, but it is more than enough to let Fang Yan in.

Looking at the dark underwater cave, Fang Yan didn't have too much fear in his heart, because, as a cultivator, he had already prepared to face all kinds of crises, if he was afraid of everything, how could he talk about cultivation and stepping on the peak of the strong?!

This cave is very long, in the dark, it extends for at least dozens of meters, the further down, the greater the resistance of the water, and it is also Fang Yan's strength, blood and qi, and the time of holding his breath is long enough, if you change to other people, you don't want to enter.

After turning a few corners, the scene in front of Fang Yan's eyes suddenly changed, but a very large underground space appeared, an underground dark river, extending into the distance, and this underground space was not pitch black, but was illuminated as if it was day.

In an instant, Fang Yan couldn't help but secretly take a deep breath, from this moment on, he had hidden his own aura, after all, his powerful aura was really too sensitive, if it alarmed some powerful brute beast demon beast, it was not a good thing.

Although, Fang Yan can be regarded as a successful cultivator now, but, after all, he is too young to cultivate enough, if he really encounters some powerful underground brute beasts and demon beasts, he will probably only have to kneel!

Standing on the edge of the underground dark river, look around, but see, on the moving wall of the entire underground dark river, you can see some strange spars, although there is no aura fluctuation, but it can shine in the dark, illuminating this underground space brightly, through this light, but clearly see that in the river, several groups of strange colorful small fish are swimming back and forth, flashing on their bodies, with strange streamers.

At this moment, Fang Yan's location should be a tributary of the underground dark river, this dark river is more than ten meters wide, looking left and right, there is a hazy fog separated by it, there is no end in sight, although Fang Yan had expected in his heart that this underground dark river may be very large, but now it seems that it is so big, but it really makes him feel a little surprised.

Taking a deep breath, Fang Yan walked forward, and after a while, he saw several stone pillars as thick as meters standing in the middle of the dark river, and then the top of the underground space seemed to support this huge underground space.

This huge stone pillar, also after many years of water washing, the so-called dripping water through the stone, is to leave a lot of bee holes on these stone pillars, with a gust of dark wind through, from time to time dripping milky white water beads, hit the water surface, for the silent underground river to add a touch of color.

Of course, don't think about it, this is just a spoiled underground stalactite, not a natural treasure such as the essence of the earth, and naturally there is no miraculous effect of doubling the power of taking a sip, at best, it is to pull the stomach for a day or two, as for poisoning, it is not necessarily.

Further on, the underground dark river seemed to be much wider, but the water flow became shallower, the land area on the shore became larger, and what appeared in front of Fang Yan's eyes was an underwater beach, and from a distance, he saw that on the beach, there were some creature the size of a basin swimming freely, and when he got closer, he saw clearly that it turned out to be some crabs.

It's just that these crabs are a little too big, the smaller ones are the size of an adult's fist, the larger ones are about the same size as a washbasin, and the bigger ones are the size of a table.

The crab is not a powerful brute beast, but this thing is dressed in iron armor and has great strength, if it is changed to an ordinary foundation building realm cultivator, it is really difficult to deal with, however, for Fang Yan, strength is his strong point, coupled with the mountain cutting knife technique he has cultivated, he can break through the armor and open the mountain, which is the nemesis of this kind of crab.

However, the number of crabs on the river beach in front of him was too much, and he did not dare to break in, so he caught a few fish from the river and killed them, and threw them far away on the other side of the river, and the bloody smell was emanated, which immediately attracted these crabs to the past, and there were many unknown brute beasts, all to make money, and the scene was chaotic.

Fang Yan took advantage of the chaos to easily cross the beach and continue to walk, in the dark river, many underwater creatures have mutated, some of them are so big that they are simply terrifying, but for Fang Yan, they are just some indifferent things, anyway, he has no intention of provoking those big guys.

"Huh, Seven Nights!" After walking for a long time, Fang Yan's eyes finally lit up, and among the cracks in the rocks on the shore, several dark red grass-like plants suddenly came into his eyes.

Seven Nights Grass, a first-order medium-grade elixir, grows in the dark realm that does not see the light of day all year round, has seven leaves, and the dark red branches are the mature appearance of the Seven Nights Grass, which can be used as a refining elixir, and can also increase the cultivation of cultivators when taken directly, and most importantly, this grass can brighten the eyes, making people's eyesight see farther in the dark.

"Good thing!" Fang Yan hurriedly stepped forward happily, picked all the ripe Qiye grass on the stone wall, put it into the baggage, and let the rest grow here freely.

Cultivators, pay attention to the understanding of nature, such a thing as chance, take half and leave half, the so-called "everything should not be too much, too much is bound to end the fate early", this is the truth.

Picking up the icy river water under his feet, he watered the Seven Nights Grass on the stone wall, and in an instant, Fang Yan walked forward again.

Walking slowly on the edge of the not so dim underground river, Fang Yan held the black long knife in his hand, although until now, he had not encountered any great danger, but he did not dare to be careless. After all, for a low-level cultivator, it was very dangerous to explore such a mysterious underground dark river space alone, and if he was not careful, his life would be in danger.

This underground dark river is long and big, but it is also the same as the river on the ground, there is a deep water area and a shallow water area, Fang Yan is now walking in the shallow water area at the edge, however, he walks against the shore and does not go into the water, the 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 Fang Yan's eyes, although Fang Yan's cultivation was shallow, he could also clearly feel the rich aura fluctuations in front of him.

"There are treasures!" Almost instantly, Fang Yan reacted, his pace quickened, he walked forward dozens of meters, turned a bend, and a strange plant grew on the stone wall on the shore.

It was a one-metre-tall plant, dark green in color, with seven branches, each with seven leaves and fruit at the top.

Red, orange, yellow, green, blue, purple, seven fruits, seven colors, in this underground dark river space, faint and gloomy brilliance, just a glance, it makes people fascinated.

However, when Fang Yan saw the whole picture of this plant, he couldn't help frowning, and it wasn't until half a sound later that he took a deep breath, tried his best to calm down the fluctuating emotions in his heart, and gritted his teeth and said, "Damn, this shouldn't be the legendary Seven-Star Dragon Slaying Fruit?"