After walking around the entire subterranean lake for more than an hour, Lin Jin regretfully discovered that he had to cultivate to at least be able to return to before his battle with the Great Black God. This was because this underground cave, other than the three passages that seemed to be the entrance to the water, did not even have a passage that led to other places.

It looked like this was the end of the underground river.

Through his observation, he discovered that the blue light emitting from the lake was an extremely tiny algae. Although every single algae could only emit a tiny bit of light, but this kind of algae was spread throughout the entire subterranean lake, and the light emitted by them when concentrated together could give the entire underground cave a bright feeling, reflecting a kind of hallucinatory color.

There are a lot of fish that swim, and they also eat this algae for a living.

Under the illumination of the blue light, these fish, big and small, swam back and forth in the lake, looking very harmonious.

In addition, the ancient trees that he could not recognize were just as he had expected. They were plants that had been dead for who knows how many years, yet for some reason did not rot. Instead, they turned into a material between charcoal and wood.

In that case, with the fish in the lake and so much wood, there would be no problem at all for him to eat cooked food. As long as they found a comfortable and dry place, sleeping would not be a problem.

He had already taken care of the food and shelter, and now that he needed to recover his cultivation, it would be a pleasure for him to be able to cultivate in such an enchanting place.

Once he made up his mind, he no longer searched for other exits and temporarily gave up on the idea of exiting.

He looked around in detail once more and carefully inspected the underground cave. He discovered that everything here was not something that could be found in modern times.

These plants, as well as the giant bones of some beasts that he found in the ancient trees, all maintained an extremely ancient state, as if they had been lost since ancient times. Even the fish in the lake were quite different from what he usually saw.

It looked exceptionally fierce.

Perhaps, this place was simply an ancient ruin! With this thought, he shook his head and finally got used to the surprise here.

After eating so many days of medicinal herbs, he hadn't been able to eat any of the cooked food. Even though he had almost no demand for the delicacies, he still felt uncomfortable eating them, and once he settled down.

He then took the fishing rod out from the Cosmic Bag and caught a few small worms from the lakeside aquatic plants as bait. Afterwards, he sat down by the lakeside and began to fish.

However, he seemed to have forgotten that even though the fishing rod was also a fishing rod, it had that unique spirit energy that was attached to it.

However, it caused the fish to be extremely fearful. As soon as the fishing rod was lowered, the small fish that were looking for food by the lake immediately swam away as if they had seen something terrifying. In the blink of an eye, it had disappeared without a trace.

Moreover, for some reason, this underground spiritual energy was much weaker than the ones on the ground. It didn't seem to have formed into any kind of small fish. After sitting there for a long time, he was still unable to find anything.

In the midst of his depression, he suddenly remembered the fishing rod's unique effect. He straightforwardly retrieved the fishing rod and threw it into the water. He picked up the fish himself.

Who knew that right after collecting the fishing rod, who knew if it was because they heard the sound of it falling into the water, or because they smelt a unique scent from his body, a few over foot long weirdo with a mouth full of sharp teeth immediately rushed over. It seemed like they wanted to taste the freshness.

Lin Jin was far worse off than when he was at his peak. Within a dozen meters. As long as there was any disturbance, it could not be hidden from his mind. Seeing these weirdo s coming from the water, they all bared their fangs and brandished their claws.

You guys want to have a taste, but I still want to have a taste! Wasn't this what they were hoping for!

When the weirdo arrived in front of him, and was about to bite him, Lin Jin's hand was as fast as lightning, grabbing the weirdo's lower jaw, without caring about how it struggled, he flung it backwards, and threw it onto the shore.

Then a second, a third... Until he threw the five weirdo onto the shore, he saw that there were still many of these weirdo coming over. He estimated that no matter how many he caught, there was nothing he could do about it. He leaped up from the lake and returned to the shore.

As for the weirdo that Lin Jin did not catch, they were gathering more and more. In just a small area by the lake, in less than a moment, there were more than twenty of them, causing the lake's surface to ripple.

On the other hand, those weirdo that were thrown onto the shore by Lin Jin had a tough life. Even without water, they were jumping non-stop, and two of their tails were even about to return to the water.

Lin Jin walked over and pressed down on them. He immediately felt the huge force coming from their tiny bodies, even if it was compared to the small fire fish s he caught in the lake beside the black tiger rock.

Only now did he look carefully, and discovered that there was a thick layer of scales on the weirdo's body. The back of the fish was pierced through with a few tips, and a row of sharp teeth was in its mouth.

However, when it fell into Lin Jin's hands, he did not care whether the weirdo was a carnivorous beast or a vegetarian.

After he sorted out the fish, he took a few small branches from the ancient forest and piled them together. Then, with a wave of his hand, a small flame appeared between his fingers and was thrown into the pile of firewood.

Under the illumination of the fire, in the midst of the deep blue colored cave, other colors besides blue finally appeared.

Although there were no daily ingredients like salt, Hei Jiu still gathered quite a few medicinal ingredients within the Cosmic Bag. After choosing for half a day, he found a kind of slightly spicy medicinal ingredient and crushed it before smearing some on the fish.

Although he was not very familiar with the culinary arts, as a Taoist, he was extremely proficient in the use of fire. Under his mental scrutiny, every part of the fish's body was roasted thoroughly by the fire.

After he finished eating, he broke off some branches from the ancient trees and found a suitable place to build a wooden house. Although the place was not big, there were also some wooden chairs and tables, which were more than enough for a monk like him.

In the underground world, although there was no sunlight as a reference, and he did not know when was night and when was day, but for the Taoists, they could no longer understand the changes of the elemental energy of heaven and earth. After calming down, they carefully sensed the changes of day and night.

In order to prevent himself from losing track of time, every time he felt the change of noontime, he would use a sharp little stone to carve a mark on a piece of wooden board to calculate the time.

Unknowingly, Lin Jin had already made more than sixty cuts on the wooden board. According to the time he spent outside, it should already be autumn, but inside the underground cave, everything was still as it was before.

During these two months, when he was hungry, he would go into the lake and catch a few fish to roast and eat. When he was thirsty, he would drink a few mouthfuls of water.

However, because he often caught those delicious weirdo in the lake, gradually, not only those herbivores, but even those ferocious carnivorous fish, also swam towards the deep sea area as soon as they saw him enter the water. They no longer swarmed him when he first entered the lake.

This made him exclaim that this weirdo had intelligence.

However, as his cultivation recovered, the number of times he ate increased. Sometimes, he did not even need to go into the lake for five or six days, which made the fishes feel a lot more at ease.

However, during these two months, the greatest benefit he had gained was not the recovery of his cultivation, but rather his comprehension of his past life.

Before falling into this predicament, although he had been cultivating, he was often at a loss. Many times, even he himself didn't understand that he had already lost himself in the pursuit of the Dao.

And in this world, no matter what, he had to deal with people. In this society where the whole world was fighting for profit, even if he thought he understood the relationship between mortals, when he was in this world, how could he not be affected?

Furthermore, from his own experiences and some clues, he knew that the real Taoism was not as simple as he had imagined. Countless experts in the Dao had also unwittingly given him a lot of pressure, causing him to subconsciously struggle with all his might to improve himself and reach the peak of Taoism as soon as possible.

Thus, at times, he appeared to be very calm, and at other times, he appeared to be somewhat greedy. Like this, it basically caused his mind to become unstable, causing him to be at a loss in the pursuit of external things.

But in reality, this desire was the biggest confusion one had in the Taoist. If they could not get rid of this barrier, then they would lose themselves in lust and be unable to see through their own heart.

But the unknown nature of the world also gave Lin Jin, who was in this state, a chance to thoroughly think. When he was in society, he had received various impressions, so he had only cultivated and rarely thought about it. He had comprehended some 'principles', but he had no idea what was going on.

However, he did not have to deal with any kind of people or rush to increase his cultivation level as he was trapped in the cave. Other than four or five hours a day to recover his cultivation level, the rest of his time was spent in his thoughts.