Of course, Zhang Yimin couldn't have known about what happened in the thirteenth district, and at this moment he was squatting on a cliff, scratching his hair in distress.

Seven or eight days had passed, and he and Qian Chenglin had almost turned around the island, but they couldn't find a place where the energy gathered.

On the first night, his conjecture of the self-destructing stone had been confirmed, and the self-destructing stone was indeed constantly decomposing during the day, but it slowly grew up again at night.

However, this discovery obviously did not help the immediate predicament, and he went to the beach for a few days, and the only thing he found was that the fish gradually increased.

It's just that the fish here are not as big as those seen on the beach, but they are just as delicious to eat, but where does the energy in this place go?

Qian Chenglin slowly sat down beside Zhang Yimin, patted his face gently, and waited for his face to turn before smiling, and said softly: "Just come out with me to play!" ”

Zhang Yimin smiled, this was what he had comforted Vena Xing, looking at her beautiful smile, he couldn't help but lean over and kiss her on the face.

Looking at her blushing face, Zhang Yimin stood up and said, "I don't think the color of the stone over there is quite right, let's go there and have a look!" Since you come out to play, you have to have a good time! Qian Chenglin smiled and nodded, and the two of them slipped down the cliff.

Stones are still just stones, nothing special!

The two of them also felt that they were tired of having a book-reading-novel, and when they sat down on the stone to rest, Zhang Yimin began to think again.

After a while, he turned his head to Qian Chenglin and said: "I found that maybe I was wrong, if there are only a few places in this place that can absorb energy, there should be a change in the strength of the energy here, we have been looking for this for the past few days, but the concentration of energy in almost every place is about the same, I went to the sea to try it, but the energy in the sea is more abundant, so I deduce that the energy that absorbs is only those three self-destructing stones!" ”

Qian Chenglin obviously didn't have a very good talent in reasoning, and when she heard this, she couldn't help but be stunned, and then she was relieved, since those three stones could grow on their own, it was naturally possible that they could absorb true qi! "So what should we do?"

Zhang Yimin continued: "If the self-destruct stone can absorb energy, this can explain why it will grow and decompose on its own, and the things they guard are afraid that they are under our feet!" ”

Qian Chenglin jumped up in fright, looked at the ground, Zhang Yimin hugged her with a smile and said, "Don't be afraid! If something had happened, it would have happened a long time ago! There may be something wrong with the direction we are searching, now let's look for the water source! ”

It turned out that he had just thought that if the island was a whole, then a place with a water source must be a passage within the whole!

The water must come from underground, and if there is a place for this island to go underground, then there must be a passage to go deep into this island, and this may be a direction!

Qian Chenglin didn't have any objections, just nodded to the side.

I remembered that in the past few days of searching, I found a small lake, not far from the center of the island, but because there was nothing abnormal in the surrounding energy, I did not enter the water.

It seems that this time I got to the bottom of this lake to see, only by rain, it is impossible to store so much fresh water here, there must be a few small streams that slowly flow to the sea, so there must be an underground water source under this lake!

It was already evening when they returned to the small lake, and the two of them were not in a hurry to look for it, so they found a place to rest for the night, recuperated their spirits, and prepared to explore again the next day.

Early the next morning, the two of them ate some dry food and daggers, and walked slowly towards the lake.

The lake is also like an island, there are no creatures, but the more Qian Chenglin walks, the more strange she feels, the bottom of this lake is unexpectedly flat, and there are not even stones!

It stands to reason that this shouldn't be the case where there is a spring? She must have stayed in the mountains and seen the lake, but she had never seen the bottom of such a lake, so she hurriedly told Zhang Yimin what she had discovered.

Zhang Yimin also felt strange when he heard him, and after feeling it carefully, it was indeed the case, and he couldn't help but be happy, "! There are quirks! "There are strange places to discover, and we should pay more attention to them at the moment.

The water in the lake is extremely smooth, the deepest part is no more than waist-deep, and the water is so clear that you can see the silt at the bottom of the lake at a glance.

It was only when he walked to the place near the mountain that Zhang Yimin felt the faint flow of water, and the bottom of the lake was a very flat boulder, but the mud on the edge was covered and he couldn't see clearly.

Zhang Yimin dived into the water, little by little, and when he encountered a hard object in the dirt near the side of the mountain, Zhang Yimin couldn't help laughing, this is also a plane, it will definitely not be a natural formation!

The two of them sped up, and after a while, they cleaned up the corner of the lake near the mountain, and when the muddy water slowly flowed away, the two people cheered, it was a whole right-angled stone wall!

It seems that the lake was supposed to be a pool, but the sludge slowly settled, and the entire bottom of the pond was slowly covered, leaving only a little of the bottom of the pond exposed.

The two of them continued to work hard to clean up the entire pool side of the mountain, but it was a meticulous job, and only half of it was cleaned up in the morning.

But there's no need to clean up anymore, because they've already found what they're looking for! It was a stone slab embedded in the wall!

Zhang Yimin held the protrusion on the slate and slowly pulled down the slate, and found that the slate was extremely ingeniously designed, and carefully studied it, and found that the water could only flow out, but it could not flow in the opposite direction, thinking that this was to prevent the water from flowing backwards.

"! There's a situation! ”

Barely suppressing the ecstasy in his heart, Zhang Yimin lay at the bottom of the pool and looked at the fence behind the stone slab, this is a water outlet, and the water inside flows out steadily, if it weren't for the big stone blocking the gate of this fence, the two would have found it according to the water flow.

This fence is only half a person high, and it should be able to get into it for a person, but what next? Zhang Yimin didn't have an idea, "Nima, it's black and mushy here, I don't know if there's anything big about it!" ”

When Zhang Yimin stood up and looked at Qian Chenglin, he was surprised to find that she had no worries at all with a smile on her face.

"! With such a big hole, even if you hide it, how big a thing can you hide! Can I still eat it? Gritting his teeth, he said to Qian Chenglin: "I'll cut the fence in a while, go in first with the rope, and I'll pull the rope if there's something, and pull me out with all my strength if I pull it twice!" ”

Qian Chenglin looked at him with a smile, "Can you see it?" ”

Zhang Yimin didn't move all of a sudden, but Qian Chenglin smiled and said: "Let's come, I think if there is danger, it should have happened a long time ago, the signal is just like you said!" ”

Zhang Yimin wanted to say more, but Qian Chenglin blocked his mouth with a soft palm, and had to nod helplessly in agreement.

Qian Chenglin kissed him on the face, and without waiting for him to react, she dived into the water, the rope was already tied to her feet, it seemed that she was ready when Zhang Yimin found the fence!

With her dagger and her true qi, she quickly cut off the fences that she didn't know what they were made of, and the people were slowly swimming into the hole.

Zhang Yimin held the rope tightly in the water, feeling that the rope was slowly dragging into the hole, and he also let go of the rope little by little, for fear of missing her signal.

The four walls of the passage are extremely smooth, what kind of biological material should they be made of, Qian Chenglin felt strange in her heart, but her hands were slowly gliding the water, and she slowly walked forward against the faint current.

The passage is not very long, after advancing more than ten meters, turning a corner to the end, through the eye of the night, Qian Chenglin found that there was a finer fence in front of him.

The rope suddenly stopped moving, Zhang Yimin became anxious, for fear that Qian Chenglin would encounter some danger, but there was no further signal, he could only stay there, motionless, and his true qi had already moved slowly.

Qian Chenglin was just about to cut the fence in front of her, and suddenly found that there was also a fence above her head, hesitating, she tentatively reached out and pushed it up, and the fence above her head rose in response.

The body slowly stood upright, her upper body had left the water, standing there and looking around, Qian Chenglin had a smile on her face, at a glance, all sides were very flat, and it stretched extremely far! That's a passage!

Zhang Yimin anxiously pulled the rope, didn't know what to do, and was about to drag her out directly, when he suddenly felt that the strong son pulled in, and he didn't move, and he couldn't help but show joy, knowing that Qian Chenglin had already discovered something, he immediately dived into the water and slowly swam forward along the rope.

By the time he came to Qian Chenglin's feet, Qian Chenglin had already reached out and grabbed his hand and pulled him out of the water.

The two of them didn't dare to breathe, for fear that there was something vicious in it, and it wasn't until Zhang Yimin turned on the flashlight and took out the poison test pen that the two of them breathed a sigh of relief, there was only a faint red light here!

Zhang Yimin took a tentative breath, and immediately turned on his true qi, and after a long time, he didn't find anything abnormal, then he opened his mouth and said, "What kind of place is this?" As he spoke, he shone around with a flashlight.

"I think it's supposed to be the interior of a building, but I don't know what it is!"

Zhang Yimin sighed lightly and said, "If only I had night eyes like you, but now it's all up to you!" ”

Qian Chenglin chuckled, untied the rope on his body, threw it aside, held his hand, and slowly walked forward.

The darkness of the passage was quiet, and it seemed that even the air had not flowed, and Zhang Yimin became more and more strange the more he walked, "Nima! What is this passage made of? Why is there no response at all? ”

Qian Chenglin looked left and right while walking in front, and suddenly stopped, Zhang Yimin took the flashlight and shone it, and asked, "What's wrong?" But he saw her walking to one side of the wall, and scratching something with her hand on it.

Zhang Yimin leaned up and shone a flashlight, it turned out to be a button, Qian Chenglin looked at him, showing an inquiring look.

Shaking his head helplessly, he didn't know what it was to control, after thinking about it, he still pressed it carefully, "Da! With a bang, the whole passage flickered, and slowly brightened, the light was extremely soft, and the entire passage wall emitted a faint light!

Qian Chenglin laughed and said, "This light is so beautiful!" After that, he pulled Zhang Yimin, who was happy, and walked straight to the front.

As the two men walked, they kept an eye on the walls on both sides to see if there were any other mechanisms hidden.

But along the way, the two of them didn't find anything, and the silent passage was extremely smooth, not even a little dust!

After walking for about 300 meters, a horizontal passage appeared in front of me, and it was pitch black on both sides, and there was no end in sight.