"Why do I feel that my brother is different from us?" Lu Siqi tilted his head and stared at Mu Heng curiously.

"What's different, it doesn't have many eyes, it doesn't have many legs." Mu Heng casually denied it.

"Senior brother, that's not what I meant." Lu Siqi saw that he would be mistaken, and hurriedly explained. Then he said: "I think my brother's actions, words and deeds are different from ours, and the truth he knows is also different from ours, as if... It seems like.. ”

Lu Siqi just said such things by feeling, he really wanted to describe it, but he didn't know how to say it clearly.

"Looks like something..." Mu Heng's heart sank, could it be that his behavior was really incompatible with this world?

"It's like it's not a human being." Lu Siqi thought about it and found such a slightly appropriate word.

Mu Heng suddenly felt a lot of grievances when he heard this, we have worked very hard to integrate into this world, okay. sighed in his heart, squeezed out a little smile on his face, and said, "You can see this." It's okay now, no need to install it. I have a showdown, I am indeed not from this world, I am from heaven. ”

"Senior brother, people just say what is in their hearts, how can you make fun of others like this." Mu Heng looked funny, and Lu Siqi felt that his IQ had been insulted.

"I'm telling the truth, I'm really from heaven." This time, Mu Heng put away his smile and said it again very seriously.

"Bah, I don't believe it. Senior brother, you look so solemn, I almost believed what you said, hehe. Lu Siqi covered his mouth and smiled secretly.

Hey, it's really too unbelievable, no one believes the truth. Forget it, after all, you are just a bystander of this world, just cultivate your own truth and love your own people.

"Don't talk nonsense, junior brother, feel it quickly, what are we going to find that thing?" Mu Heng asked, pointing to the dirt under her feet.

"I don't know, why don't we dig down and see?" Lu Siqi also stared down at the position under his feet and suggested.

"Now that's the only way to do it." As he spoke, he took out the fairy sword, used it as a spade, and began to dig the soil.

If only there was a sapper shovel, digging with a sword is really too slow.

"Senior brother, let me come." Lu Siqi saw that Mu Heng was already sweating profusely, and the pit on the ground was the size of a water tank, so he thought about replacing him.

"It's fine." The mountain is no better than the mud, and it is very difficult to dig, otherwise according to his current physical strength and strength, he would not have dug such a small size for so long.

Lu Siqi took the fairy sword, used the spiritual power and poured it into the fairy sword, and then an earth-colored glow surrounded the sword body, which was very beautiful.

"Hey." With a coquettish shout, Lu Siqi inserted the fairy sword into the stone body. Then, like a knife cutting tofu, stone chips flew, and Mu Heng was dumbfounded.

Is this still the rock I just dug up? slapped himself on the head and secretly said that he was stupid.

Get used to new thinking and bless yourself with spiritual power, but you don't think of attaching spiritual power to the fairy sword. Forget that after this peculiar fairy sword is blessed, it is similar to the extension of limbs, and if you want to do a good job, you must first sharpen your tools.

Lu Siqi was immersed in the joy of breaking through the dead stones, and slowly got used to treating the fairy sword as a part of his body.

"Talent is different, self-taught, this is." Mu Heng's heart was sour, God only favored people in this world, and he had no kindness to himself, an outsider.

Coming back to his senses, Mu Heng looked at Lu Siqi like an excavator, digging a one-person-high tunnel in front of him, which was even more buggy than the shield machine.

With this technology, it is not a dream to dig tunnels on the earth full-time, and to make money every day. Learned, learned.

There was nothing to do, Mu Heng followed behind her, transporting out the stones piled up behind her, otherwise there was still no way to move forward.

Lu Siqi seemed to be digging harder and harder, and the movements in his hands couldn't help but speed up, but it hurt Mu Heng, who was moving stones. She's getting faster and faster, the distance between us and back is getting farther and farther, and her physical strength is getting weaker and weaker.

Just wanted to let her slow down, but Lu Siqi stopped by himself.

"Huh?" Could she be able to sense my mental activity?

"Senior brother, I feel that thing is right in front of me." Lu Siqi could clearly feel the beating in the atrium at this time, but it was not the initial palpitations, but the urgent hope.

"I hope it's not a scourge. Senior brother, when you see that this is not right, return immediately. Mu Heng saw that her face was solemn and instructed.

I followed the way back by clearing the way, also to facilitate the escape and have fewer obstacles.

"Hmm." Lu Siqi answered, turned around and plunged a sword into the wall. Unlike before, after this sword mark appeared, countless cracks appeared in the surrounding walls.

There was a loud "boom", and the stone wall shattered into countless pieces.

Then, the two of them suddenly opened up in front of them, and although only a faint light shone in, they could still feel the openness in front of them.

"There's a separate space here." Mu Heng carried the hollow in the middle of the mountain and was surprised.

"Is it a cave?" This can only be explained by a cave, otherwise it is unlikely that there would be a separate space left in the middle of the mountain formed by volcanic magma.

"What is a cave?" Lu Siqi heard Mu Heng talking to himself, as if he was very familiar with this scene.

"It's a cave formed by the constant erosion of water containing carbon dioxide." Mu Heng replied casually.

"Carbon dioxide? What is it? I understood the words, but the more I listened, the more confused I became.

The word "cave" can at least be read literally.

"Carbon dioxide?" Is that a word? Is it a thing?

Mu Heng patted his head and only looked around, but forgot that carbon dioxide was too remote for the old people.

"Well, what do you say, it's a substance, it's very common. Well, the breath you exhale now is mainly carbon dioxide. Mu Heng pointed to her lips and explained.

When Lu Siqi heard this, he wanted to grab the gas he exhaled with his hand, but a stream of hot gas hit the palm of his hand, but he couldn't see the appearance of carbon dioxide at all.

flashed a pair of big eyes full of confusion, staring at Mu Heng.

Facing the two eyes that wanted to break the casserole and ask the end, Mu Heng said: "When we are free, I will explain to you slowly." This is a systematic science, and if you really want to understand it, you have to put a lot of effort into it. ”

"Hmph, as long as my senior brother is tireless, I will persevere." Lu Siqi threw him a defiant look.

Mu Heng walked into the cave in a dark way, and then looked at it in the faint light.

Lu Siqi looked at Mu Heng, who was engrossed in studying the cave in front of him, and his heart was full of questions. How could the senior brother know so much strange knowledge, refining salt, calculating the location, and what karst caves and carbon dioxide, looking at what he said easily, it didn't look like a bluff.

Besides, the fine salt, the cave in front of you, is not fake.

"The dedicated senior brother is so handsome." Lu Siqi couldn't figure out the reason, but looking at that figure, he couldn't help but like it more and more.

"Whew." Take out the fire fold and blow it gently, and a faint fire will spread out.

"Hey, it's not extinguished."

The basic operation of the engineer is to do a light experiment first when entering the confined space, and the fire can burn normally, indicating that the oxygen content is normal.

Mu Heng, who was a cultivator, didn't have to worry about the lack of oxygen, so he entered the cave without experimenting. Now that you see the flames burning normally, you can understand that this cave is rich in oxygen, that is, the air in the cave is circulating.

"Huh?" Not long after the firelight lit up, in the distance in mid-air, a strong light source suddenly burst out, although it was not dazzling, but it could also illuminate the entire space brightly.

"What's that?" Lu Siqi followed in, was stopped by the sudden burst of light, and asked curiously.

"I don't know." Mu Heng covered his fire fold, this fire light was in front of the light source, like fluorescence compared to Haoyue, and he didn't dare to compete for glory.

With the light, Mu Heng observed this strange stone room, which was basically in an irregular circle, with a diameter of about three hundred meters. In the middle stood a hugging stone pillar, and at the top of the pillar was the source point of the glowing yellow light.

"Senior brother, was that the thing that summoned you?" Mu Heng pointed to the source point and asked.

"Hmm." Lu Siqi nodded in response.

"It doesn't look like something bad, let's go and ask what its purpose is." Since it can make a call, it is conscious to think about it.

"Okay."

Before the two of them could step out of their feet, the source point suddenly flew up from the stone pillar, and at the same time bloomed with even more brilliant light.

"What the hell, can fly?" This scene frightened the two of them to stop, not knowing what the other party was going to do, so they could only stop and continue to observe to see what it did next.

The light source flew up, spinning on its own, and in a moment a round sphere took the place of the source, unchanged with the same shining.

The rotation stopped, and the ball kept bouncing up and down. There was no sound, no movement, but Mu Heng and the two still felt each other's joy like children discovering a toy.

"What is this, is it so anthropomorphic?" Mu Heng couldn't help but complain, it was obviously a thing, but he had the same consciousness as a human.

Is the argument that consciousness is unique to human beings untenable?

I don't know if I heard Mu Heng's contemptuous words, the ball of light stared at Mu Heng as if with eyes. The ball of light that flew motionless in mid-air was in a stalemate with Mu Heng like this.

Lu Siqi also noticed the light ball's targeting of Mu Heng, and reminded softly: "Senior brother, be careful. ”

"Hmm." Subconsciously felt that he was being targeted, and Mu Heng was also very speechless.

You're not summoning Lu Siqi, what are you looking for me to do?

"Whew" The sound brought by the object cutting through the air, the sphere rushed towards Mu Heng violently.

"What are you going to do?" At this time, Mu Heng also noticed that the other party could understand what he meant, put on a defensive posture, stared at the ball of light and asked.

It was not the voice that responded to Mu Heng, but the accelerated speed of flight.

"Don't come here." The speed of the ball of light was too fast, Mu Heng knew that he couldn't outrun it, and shouted anxiously.

"Bang" A hard force hit his chest, Mu Heng felt a shock in his intestines, and a mouthful of blood gushed up his throat, and he forcibly pressed it down.

Seeing the scene around him advancing, Mu Heng knew that he had been knocked out.

"Bang." Crossing the traces of an arc, Mu Heng landed on the ground at the entrance of the tunnel.

"Disliked." These two words appeared inexplicably in Mu Heng's heart. This weird orb is disgusted with itself, and it is only incidental to crash into itself.