This is already the fourth relatively empty place that Zhang Yuan and the three of them searched, and it is also the last open place on the side of the island with the lake on its back, but after half an hour of exploration, Zhang Yuan found that there is absolutely no secret passage to the lake here.

In the blink of an eye, Zhang Yuan was really puzzled at the moment, if there was no one here, then how did the giant snake appear from the lake to the top of the mountain, according to the volume of the giant snake, as long as it crawled in the woods, it would definitely leave some traces, but when he was at the top of the mountain, he had already checked the woods on the entire island, and there was no trace of destruction at all.

Zhang Yuan was a little depressed, and thought in his heart, is there really no way for him to subdue the giant snake, or that he can only face the giant snake from the lake head-on, but according to the combat effectiveness of the three of them in the water, it can only be a failure, so Zhang Yuan is not ready to do those useless work, if he wants to win the giant snake in the water, he can only be surprised, but now he can't find the hole leading to the lake at all, how can he enter the giant snake's lair unexpectedly.

Zhang Yuan found that the place where the three of them were exploring was not very far from the simple residence built on the beach, so Zhang Yuan decided to go back to the simple residence to think about other ways for now.

Zhang Yuan and the others had just walked a short distance when they heard the sound of rushing water nearby, the sound was so loud, it was obvious that the speed of the water was still very fast.

Hearing the sound of flowing water, Zhang Yuan suddenly had a flash of inspiration, knowing that he had ignored the most likely place to have a channel, there was a river in the woods, and on the entire island, the water source that could form a river was only a lake, and what he saw in the lake was only a spring that kept increasing the amount of water in the lake, but he did not find any river in the lake, so the water level in the lake has not risen, presumably there is a channel leading to the mountain peak in the lake, and the level of the lake can not grow or fall, so the passage to the outside of the lake is likely to be this channel。

"Did you hear it, there is the sound of running water nearby, and the source must be a lake across the mountain, or the passage is there, let's go and see. Zhang Yuan said.

Listening to Zhang Yuan's words, Zhang Yue began to look around, this place is still relatively familiar to him, because this is near a waterfall, and this waterfall is also the place where he practiced brute force some time ago, so when he goes from the beach to the place where the waterfall is located every day, he will inevitably pass by here, thinking of this time, Zhang Yue said: " There is a waterfall not far from here, and the waterfall also seeps out of the mountain crevice, maybe there is really a mountain crevice that a giant snake can pass through, I have been here a few times, you come with me. ”

After Zhang Yue finished speaking, he led the way forward first, and after listening to Zhang Yue's words, Zhang Yuan immediately understood that this must be the place where Zhang Yue practiced before, so he glanced at Qin Siyu and followed.

After Zhang Yuan and the three of them came to the waterfall, they saw that the waterfall was really as Zhang Yue said before, it was completely composed of the water seeping out of the mountain cracks, but looking at those mountain cracks, Zhang Yuan knew that it was absolutely impossible for the giant snake to come out of it, because the widest of those mountain cracks was less than one meter, and it was absolutely impossible to wear out of it with a diameter of about three meters for the giant snake, and now the only possibility was only behind the water curtain of the waterfall, but at this moment, the water curtain was completely blocked by the water flow that kept flowing, and everyone could not see the situation after getting up, and Zhang Yuan stood at the bottom of the waterfall, this distance has completely exceeded the limit of Zhang Yuan's perspective, and the remote vision has no perspective function, so Zhang Yuan also couldn't see the scene after the waterfall.

"Zhang Yuan, why don't I step on the flying sword and rush in to take a look?" Zhang Yue proposed.

Although Zhang Yue has stepped into the realm of true immortals at this moment, he has not practiced any water-related spells, and the time for practicing brute force is not very long, Zhang Yuan does not think that Zhang Yue can withstand the huge impact of the waterfall, so he still asked cautiously: "Now, can you stand directly in the middle of the waterfall and bear its huge impact?"

After Zhang Yue listened to Zhang Yuan's words, he shook his head slightly, if he usually practiced brute force duels, he would just stand in the corner of the waterfall to practice, and he was completely incapable of challenging the impact of the waterfall center, and the impact of this waterfall was particularly large, completely different from what he had seen in Huaxia before, the same size of the drop, the impact of the waterfall here may be ten times that of the waterfall he had seen before, perhaps because the aura of heaven and earth contained in the lake water is too strong, so the water quality here is also relatively heavy, or if he has a body like Zhang Yuan, he may be able to try it, but now my body is really not that strong.

"Zhang Yue, you take me up, I'm going to take a closer look!" Zhang Yuan said.

Zhang Yuan spoke, Zhang Yue immediately drove his Wind Sword to levitate, he stepped on the flying sword first, and Zhang Yuan immediately jumped up after him, stepping on the hilt of the Wind Sword under his feet, and put his hands on Zhang Yue's shoulders.

After Zhang Yuan stepped on the flying sword, Zhang Yue controlled the flying sword to fly high into the air, starting from the top of the waterfall and slowly descending downward, so that Zhang Yuan could clearly observe it.

After the flying sword dropped a distance of about ten meters, Zhang Yuan suddenly let Zhang Yue stop falling and continued to fall, and controlled the flying sword to get closer to the waterfall, at this moment in Zhang Yuan's eyes, there was a hole with a diameter of about four meters behind the waterfall, and looking at the neat stone wall around the hole, it was obvious that this hole was artificially chiseled, but on a small island in the vast sea, who would come here to open such a passage.

At this moment, Zhang Yuan was a little suspicious of the identity of the giant snake, you must know that after the snake cultivates to a certain realm, there will be a fork in the road, and after arriving at this fork in the road, the snake cultivator can choose one from two completely different cultivation directions, one of which is to transform into a human being, so that the snake cultivator can easily survive when he experiences the transformation of the heavenly tribulation, and the other one, the vast majority of snake cultivators will not choose, that is to choose the dragon, because the catastrophe that the dragon needs to experience and the catastrophe experienced by the transformation of people are completely different, and then go through the heavenly tribulation that is 9981 times more powerful than the human tribulation to have the basic conditions for turning into a dragon, and finally completely cut off all the organs in the body, and then use the true element to condense new organs, when all this is completed, the dragon will break through the snake's skin and become the weakest true dragon, which is also equivalent to the human golden immortal realm.

Not to mention the self-harm after that, a snake cultivator can do it as long as he has great perseverance, but if an ordinary wild snake cultivator, even if he can pass the catastrophe of the dragon, it is absolutely impossible to survive the catastrophe of the dragon, because it is too difficult, unless there is a person who is super strong to help the snake cultivator prepare some magic weapon formations and ammunition needed to cross the tribulation, otherwise, the dragon will end in failure, so at this moment, Zhang Yuan is a little suspicious, this giant snake is only afraid that it is not wild, maybe it is a snake cultivator with a master.

If the giant snake has its own owner, then it can explain why there are traces of artificial carving here, maybe under this lake, there is a golden immortal or a higher quasi-saint cave, then it may be a little inappropriate to rashly surrender the giant snake, if the owner of the giant snake has passed away at this moment, there is nothing to do it, but if the owner of the giant snake is still alive, his actions are a naked provocation.

Although Zhang Yuan guessed that the giant snake had an owner at the moment, it was a little too late to say anything now, after all, he had already begun to take action, and he was afraid that he had completely offended the giant snake, and all he could do now was to completely subdue the giant snake, and then find out the situation of the original owner of the giant snake from the mouth of the giant snake, so as to find a way to avoid possible threats in the future.

Commanding Zhang Yue to keep approaching the waterfall, Zhang Yuan suddenly jumped in the direction of the waterfall when the flying sword could not continue to move forward, hoping to jump directly into the cave behind the waterfall, because in the cave behind the waterfall, Zhang Yuan didn't feel any emotional fluctuations at all, so if he wanted to go over, Zhang Yuan could only choose such a risky move.

When Zhang Yuan's body entered the waterfall, he knew the horror of the impact of the waterfall, originally according to his own understanding, he was about to approach the top of the waterfall at this moment, it should be said that the impact of the waterfall has not been exerted to the maximum at this moment, but Zhang Yuan obviously misestimated the size of the impact of the waterfall, so he just entered the waterfall, Zhang Yuan's body fell down with the water flow of the waterfall, and fell into a small pond that rushed out of the waterfall in the blink of an eye.

Although the impact of the waterfall is very large, it has not exceeded the limit of Zhang Yuan's body, so Zhang Yuan did not suffer any damage after being washed down by the waterfall, but just swam up by himself after sinking slightly in the water, and as soon as his head surfaced, he heard the inquiry of Zhang Yue, who was hovering above the small pond with a sword.

"Zhang Yuan, you're fine, right?"

Spit out the river water in his mouth, Zhang Yuan said loudly: "It's okay, it's just that if we want to enter the passage behind the waterfall, we need to think of other methods." ”

After listening to Zhang Yuan's words, Qin Siyu, who had been staying on the shore, immediately asked, "Have you found the entrance to the cave?"

Zhang Yue pulled Zhang Yuan out of the water and flew towards the place where Qin Siyu was, and at the same time, Zhang Yuan also told Qin Siyu what he found behind the waterfall, and the three of them began to think about how to enter the passage at this moment.

"Zhang Yue, you can dig a passage on the mountain wall outside the waterfall and directly open up the passage behind the waterfall, so that as long as you bring us into the hole you dug, won't we be able to enter?" Qin Siyu's eyes lit up and said.

Zhang Yuan knew that what Qin Siyu said was feasible, so he agreed, but if Zhang Yue wanted to dig a hole when controlling the flying sword to hover, it was obviously a bit difficult, after all, as a true immortal, he was still lacking in fighting in the air, and if he went up, he couldn't leave Zhang Yue's body, so it was better to just let Zhang Yue go up and dig a hole, after the three of them decided, Zhang Yue flew up again and began to dig a cave in the safe place closest to the passage.