Yuan force operates, stirring the muscles and veins, its sound is like a string, vibrating bones, and its sound is like a bell, and only when the inner yuan cultivates to this point can it be regarded as truly entering the fourth-level martial realm. The realm of bell bones and tendons is a formal intermediate martial artist.

It's just that from quenching the muscles like strings, cultivating to refining bones like bells, until the bells and drums at the peak of the fourth-level martial arts realm, and the muscles are like copper strings, these three stages are all accumulated over time, and it is extremely difficult to achieve them overnight.

"How is it possible? Could it be that this kid has taken a gene enhancement solution above grade B before, and the effect of the original solution has precipitated, and it has only come into play now?" Lao Zheng was shocked, and immediately denied this judgment, "The use of gene enhancement liquid is definitely not this phenomenon, this kid's current situation is obviously in a state of epiphany." However, how could his inner yuan cultivation have improved so significantly?"

"Wait!" Suddenly, a thought in Lao Zheng's mind flashed at him, "Is the martial arts cultivated by this kid a great martial art of more than seven grades? That's right, among the martial arts above the seventh grade, there are many martial arts that integrate combat skills and exercises, complementing each other. What the hell is the origin of this kid?"

Staring at Sun Yan and observing his every move, Lao Zheng found that this young man was full of all kinds of mysteries, and he couldn't figure out his true details.

In the passage at the entrance of the cave, the sound in Sun Yan's body slowly stopped, and the brilliance on the surface of his skin slowly converged, and then, he opened his eyes, and a ray of light appeared in his eyes from time to time.

"Hoo ......"

Sun Yan exhaled a breath and blew out a light breeze, and immediately, he showed a look of surprise, "This is refining bones like a bell!" Stretching his limbs slightly, he only felt that his whole body was as light as a feather, full of qi and blood, full of inexhaustible strength.

Damn, what's going on? Brother, the Yuan Force cultivation I just now is obviously only to the extent of quenching the muscles.

When he came to the Blade Mountain Cleaner Camp, Sun Yan's fourth-level martial realm was stable, and he originally expected that it would take about a month for him to reach the point of refining his bones like a bell. Unexpectedly, this was only the time when he was stunned, and his own inner yuan cultivation had a breakthrough.

When I was thinking about it, I suddenly felt something different in my right hand, and when I looked down, I saw the severed hair of the thumb of my right hand, the thickness of my little finger, shaped like a wrench, at this moment, there seemed to be a ray of light circulating in it, and gradually disappeared. A trace of softness lingers on your fingertips.

"Senior Sister Binglan's broken hair?" Sun Yan couldn't help but be surprised.

"This is the war book, junior brother Sun Yan, take good care of ......"

Thinking back to this sentence in his ears, now that he thinks about it, Lin Binglan's words when he parted have another deep meaning, and this truncated war book may have a special magical effect.

"Belon once said that Senior Sister Binglan's comprehension of Xingluo's true meaning has reached an extremely deep realm. The true meaning of Xingluo can be called one of the most profound kinds of martial arts, and the [Great Star Luotian] created by this is infinitely mysterious and difficult to measure. After cultivating [Great Star Luo Tian], Senior Sister Bing Lan's hair has undergone such a change, could it be that this truncated hair actually contains the true intent of Star Luo, which can accelerate the cultivation speed of a martial artist?"

Thinking carefully about the progress of cultivation during this time, Sun Yan gradually had a positive answer in his heart.

During this week in the Blade Mountain Cleaner Camp, for fear of being detected by others, Sun Yan was cautious and did not dare to carry out the inner yuan cultivation. Coupled with the fact that no actual combat has been conducted, it stands to reason that the growth of the endogen should be close to stagnation. However, Sun Yan's Yuan Power did not stop, although it was far less rapid than when he was cultivating, but with his keen perception, he still sensed the changes in the inner Yuan.

"Senior Sister Binglan handed me this truncated hair, does she want me to progress faster?"

For a while, thinking of Lin Binglan's intentions, Sun Yan couldn't help but feel agitated. Perhaps in the eyes of others, Lin Binglan is talented and talented, and she is a peerless martial arts genius, and as one of the four great suns, she deserves it.

However, Sun Yan didn't think so, and gave his opponent a generous gift, just to be able to fight with him, comprehend and sublimate in the battle, and break through the shackles of the existing realm, which is already the mind of a martial arts master.

At this moment, Sun Yancai really had a sense of recognition and respect for Lin Binglan.

"Senior Sister Binglan, a year later, stepping on the top of Cloud Peak, you and I will fight, see you and leave!" Looking at the broken hair like a wrench on his right hand, Sun Yan smiled freely.

At this time, Lao Zheng's voice came: "Xiao Yan, your strength has taken a step forward, congratulations! It is really enviable to be so good at such a young age." ”

Lao Zheng said with a smile, his eyes swept over Sun Yan's right hand without a trace, he was already sure that the wrench must have a magical effect, and he became more and more curious about the identity of this young man.

When he came back to his senses, Sun Yan smiled and said, "Xie Lu, thank you for your compliments! Lao Zheng, do you also think that I am very good? Actually, I think so myself." ”

"......" Lao Zheng was speechless for a while, this young man's face is not ordinarily thick.

As the two were talking, their expressions suddenly moved at the same time, and they stopped talking, looking out of the cave, and their eyes on the ground in the distance.

"There's movement. Sun Yan said softly, he could feel a slight vibration coming from the ground in the distance, and this vibration came from the ground.

Lao Zheng nodded slightly, and said in a deep voice: "There are still 12,000~15,000 meters away from here, and about 800 meters from the surface." Judging by the frequency of the vibrations, it should be [Diamond Beast], but it sounds like there is only one head now. However, it has never been possible for the [Diamond Beast] to go out alone. ”

Sun Yan nodded silently, secretly admiring, at most, he could only feel the distance of this fluctuation, about 10,000 meters, about 1,000 meters from the surface. And Lao Zheng's perception is much more accurate than him. From this point, it can be inferred that Lao Zheng is at least an eighth-level martial artist.

"[Rock Drilling]?"

Stand up and put on the D-level protective suit, this set of protective clothing is different from the previous one, and the special reinforcement carried out by Professor Luo can withstand the agitation of the Yuan Force of the sixth-level martial artist, which is infinitely close to the standard of the C-level protective suit.

After dressing up, he walked to the entrance of the cave, and Sun Yan said calmly: "Lao Zheng, leave these [Rock Drilling Beasts] to me." If you find other unexpected situations, you can deal with them. ”

The division of labor between Sun Yan and the three was clear, Ling Zi was responsible for expanding the passages of the underground camp and laying various traps, while Sun Yan and Lao Zheng were responsible for the sudden invasion of foreign beasts.

Sitting in the passage, Lao Zheng didn't mean to get up at all, and said with a smile while drinking wine: "This is the best, you also know that I have an old bone, and it is best for you young people to hunt foreign beasts." Don't worry, I'll leave you a little glow-in-the-dark. ”

"You old man. Sun Yan despised it fiercely.

At this moment, there was a noticeable tremor outside, the ground shook, and a rumbling sound could be heard from afar. I saw that on the ground in the distance, the surface of the ground as solid as iron actually swelled, and a rock mound continued to bulge, spreading towards this side.

"Good guy, is this the drilling efficiency of the [Rock Beast]? It's amazing!" Sun Yan was stunned, it was the first time he had seen the dispatch of the [Rock Beast].

Behind him, Lao Zheng said with a smile: "This is nothing, [Rock Drilling Beast] is a sixth-level alien beast, the skin of this monster is as hard as diamond, even if it is an alloy plate, it can be drilled open." In the interstellar flight accident, there are many incidents, that is, someone secretly brought the eggs of the [Diamond Beast] on board. In the end, the flight ship was drilled open by the larvae of the [Rock Driller]. ”

"So powerful?" Sun Yan was startled, the larvae of the [Rock Drilling Beast] can drill through the bulkhead of the spaceship, what strength should the adult worm have?

"Actually, the really scary thing about [Rock Drilling] is in its mouth. Lao Zheng smiled mysteriously, "If you wait for a while, you will be able to experience the power of that mouth, which will definitely make you want to die." ”

"Lao Zheng, what you say is so ambiguous!" Sun Yan retorted.

Bang bang bang......

A series of muffled sounds came, and the sound was like a drill hole punching, but its decibels were thousands of times stronger, and the rumbling was endless. At the same time, the ground shook violently, shaking enough to make a person fall on the spot.

Ahead, the mound splunged in. As far as the eye can see, a small hill area is formed. Who would have thought that such a change in the surface would only take a few minutes.

Boom!

There was another violent roar, and the ground not far in front of the cave suddenly exploded, flying sand and rocks, and countless debris splashed into the air and fell to the ground one after another. The entire surface camp was instantly covered with a layer of debris.

Then, the muffled sound slowly disappeared, and the surrounding area returned to calm, only a hole appeared in the ground not far away, about 3 meters in diameter, and there seemed to be something in it.

Watching all this, Sun Yan frowned, left the entrance of the cave, and walked slowly towards the cave. The Yuan Force in the dantian operated rapidly, spreading to the limbs and hundreds of remains, and his steps became lighter and lighter, and the Inner Yuan breakthrough just now made Sun Yan's body lighter, and his feet were like cotton when he advanced, without the slightest sound.

Walking to the cave, standing still at a distance of 20 meters, Sun Yan stood still, he could feel that there seemed to be something in the hole, ready to rush out at any time.

Suddenly, a roar burst out, and a black shadow burst out of the cave, rising until it was more than ten meters high before stopping, and countless debris splintered again.

Whoosh ...... Hundreds of rubble were shot at you, as fast as the bullets of an old-fashioned firearm. It is conceivable that if you are splashed with these gravels, you will be immediately beaten into a sieve.

The cyclone that swirled around it kept circulating, and if it slowed, it bounced away the dense debris one after another. Raising his head, Sun Yan looked up at the behemoth in front of him, and finally understood why the residents of the camp were even more afraid of this strange beast than the [Four-winged Iron Feather Vulture].

This is a terrifying monster with a body diameter of nearly 3 meters, and the length of its body alone is more than 12 meters, and the actual body length is probably more than 20 meters. The skin is grayish-yellow, but it has a rock-like texture, and if it were standing there, it might be considered a stone pillar.

However, if a stone pillar shakes violently, the sensory impact itself brings is extremely shocking.

"What a big guy!" Sun Yan muttered softly.

However, although his voice was soft, it immediately elicited a reaction from the [Diamond Beast]. The next moment, the upright head hung down, allowing Sun Yan to see the appearance of its head clearly.