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Han Fei silently walked through the dark and damp passages, like a wolf looking for prey. Pen "Fun" Pavilion www.biquge.info

This is a tunnel hidden deep under the Blackstone Demon Castle, I don't know how many years ago it was excavated, it originally existed as a mine, but it has been sealed for a long time.

However, this does not mean that this tunnel has been completely abandoned, it is connected to the dense spider-like drainage channels, secret passages, and mine passages under the Black Stone Demon Castle, and through this labyrinthine tunnel network, you can even reach the underground city under the snow-capped mountains more than ten miles away from the Demon Castle.

For the pure-blooded demons in the Demon Castle, the existence of these underground passages has little to do with them, and few demons even know about their existence, but for the half-blood demon descendants living in the slums, these tunnels may be their home, safe habitat, escape and even the elements of life - when Han Fei first came to the Blackstone Demon Castle, Aragorn's companions used a tunnel to sneak attack him.

Han Fei had only been in the Black Stone Demon Castle for only half a month, and of course he was not familiar with the intricate underground passages, but he had the best guide.

"Mentor, if the map is correct, let's take another detour to the Magical Energy Warehouse!"

Aragorn, who had always been at the forefront, stopped, holding a magical map in one hand and a spiritual lamp in the other, illuminating the map and the way forward.

"Very good..."Han Fei nodded, satisfied with the apprentice he had put a lot of effort into cultivating.

Just yesterday, with the help of Han Fei, Aragorn successfully opened up the thirty-six Dou Qi meridians to open up the Moon Qi Sea, and successfully condensed the Body Protector Dou Armor, becoming a fourth-order Earth Warrior.

In half a month, from an ordinary person to an earth warrior, Aragorn has completed the path that many warriors need to walk for a lifetime, such a speed is completely unimaginable, if it weren't for Han Fei's cultivation of the Xuanmen Life and Death Technique to the realm of the Eight Heavens, he would not be able to help him do it.

However, Aragorn's leap in strength can only end here for the time being, and he can only rely on himself to go on the road in the future, and it is impossible for him to advance so quickly.

Han Fei's time was limited, and the demon army that invaded the south made a big move, and the time was ripe, and after drawing a map of the underground passage of the demon castle, he immediately launched an action.

The reason why he brought Aragorn was firstly because of his familiarity with the underground environment, and secondly, it was also to test Aragorn's loyalty to him.

If he had any doubts about Han Fei's actions, Han Fei would definitely ruthlessly wipe them out.

And Aragorn did not break the oath he had made, and he did not hesitate to carry out Han Fei's order without asking the reason and purpose.

In fact, like many half-blood demon descendants, although he has demon blood, Aragorn does not consider himself a part of the demon race, he and Aina's parents were brutally killed by a demon nobleman, and some are only hatred.

Following the instructions on the map, the two quickly reached the end of the passage, where a stone wall in front of them blocked the way.

"This is it!" Aragorn put away the map and said in a very affirmative tone, "The Magical Energy Warehouse should be behind the stone wall!"

In fact, he was not completely sure in his heart, the magic map in his hand was collected and pieced together by Han Fei after subduing the various guild forces in the slums, and it was difficult to guarantee that there would be no mistakes.

On top of that, the map couldn't show how thick the wall was, how long it would take to break through without being noticed by the warehouse guards, and it was the first time I had done such a thing, so I couldn't help but feel a little worried.

"Let me come!" Han Fei said in a deep voice, pulling out the Dragon Slaying Giant Sword with his backhand.

Under the infusion of the Innate True Yuan, the Dragon Slaying Giant Sword emitted a dazzling sword aura light, and with a stiff arm, the giant sword pierced into the stone wall like slicing tofu until the sword body was completely engulfed.

"Drink!"

Han Fei snorted lightly, flipped his wrist and drove the giant sword, the sword qi broke through the hard rock wall and drew a large circle in the blink of an eye, this legendary-level weapon was actually used by him as a tool to dig the wall.

After drawing a one-person-high circle on the stone wall, Han Fei drew his giant sword and raised a palm to line up in the center of the circle.

The palm shot was extremely fast, but it hit the rock wall without the slightest movement, as if it had not used any strength at all.

But in the next moment, the entire stone wall that had been divided by the giant sword suddenly turned into gravel and fell with a bang, and for a while, the dust flew up, splashing on Han Fei's body and being bounced away by his protective true qi.

Aragorn was suddenly startled, he never expected Han Fei to use such a technique to break through the stone wall, his heart was a mess with reverence, and he stood behind and looked at Han Fei with awe.

"You work hard, you can be like me in the future!" Han Fei felt his gaze and turned back to Aragorn and smiled.

While motivating Aragorn, Han Fei's movements did not stop, he continued to swing his sword forward to break through the wall in a circle, advancing at an astonishing speed.

And Aragorn was not idle, he was in charge of cleaning the debris before it caused a blockage.

With the cooperation of the two, it only took more than ten minutes to dig a new passage seven or eight meters long.

"Ding"

The sword momentum suddenly blocked but it couldn't fall, Han Fei's expression moved, and he slapped open the stone wall with a wave of his palm, and a completely different black rock wall appeared in his sight, shining with a cold luster under the illumination of the spirit crystal lamp.

Although Han Fei had not been in the Demon Castle for a short time, he must have been familiar with this kind of stone, which was the obsidian essence stone used to build the outer wall of the Demon Castle.

Obsidian is the essence of the blackstone mine, extremely hard and has a high magic resistance, and it is not surprising that it can block the penetration of the dragon slaying greatsword.

And the appearance of this large area of obsidian stone wall, which was obviously built by hand, showed that Han Fei had found the location of the magic energy warehouse, which was undoubtedly the last barrier to protect the warehouse!

Han Fei took a deep breath, and the sword body of the Dragon Slaying Giant Sword suddenly changed, turning from the original crimson to red gold in the blink of an eye, and the tip of the sword spat out a golden-white sword several feet long, with a sharp tip and extremely sharp edge.

He stabbed his sword again, this time breaking a gap in the obsidian stone wall with the sword bolting straight into it, and the long blade of the sword followed the trend and successfully pierced into the wall!

However, Han Fei was not very happy, he found that after the giant sword pierced, the sword tip was compressed to less than half an inch, the inside of this obsidian essence stone wall was even stronger, and the sword did not feel like it penetrated the stone wall to the hilt, its thickness was definitely not low.

The majestic innate true yuan flowed into the sword body, and Han Fei urged the power of the true yuan to ninety percent before holding the sword with both hands and starting to draw circles.

Compared with the previous destruction of the stone wall, the current speed is undoubtedly much slower, and it took nearly twenty minutes to draw a large circle one person high.

After this was done, Han Fei didn't break the wall with his palm power like before, because that would definitely fail.

"Stand back!" he led Aragorn until he reached the entrance of the new passage.

Sticking the Dragon Slaying Giant Sword into the ground, Han Fei clasped his hands in front of his chest and formed a momentum of hugging the ball, his dark eyes were bright, and a black ball quickly formed between his palms.

The entire passage was immediately enveloped by the immense and incomparable power of darkness, and Aragorn, who was standing behind Han Fei, involuntarily took a few steps back, being pushed away by this sudden force.

Roar!

Han Fei's palms pushed forward flatly, and the black ball in his palm turned into a gushing stream of flames and exploded out, and in an instant, it expanded into a roaring black dragon, its thick body almost filling the entire passage!

Dark Dragon Explosion!

Although it was only a heaven-level fighting skill, in the hands of Han Fei, an eighth-order legendary martial artist, it had a power that was not inferior to a god-level fighting skill.

Rumble!

The shape-shifting black dragon crashed into the obsidian stone wall in an instant, and the barrier that had been destroyed by Han Fei with the Dragon Slaying Giant Sword could not withstand such a powerful impact, and it suddenly split apart and exploded!

The earth trembled suddenly, and the obsidian stone wall in front of him was broken into a large hole, although the flying dust and mist obscured the view, but a large red light could be vaguely seen shining into the passage through the hole, and there was obviously a hole behind the stone wall!

Without the slightest hesitation, Han Fei's figure swept through the passage like lightning and entered the inside of the Magic Energy Warehouse.

Inside was a huge space, at least hundreds of meters wide in length and almost twenty or thirty meters high up and down, and in this underground space, there was only one thing piled up - magic energy crystals!

The magic energy crystal can be said to be the most important material of the demon race, and it is the foundation of their existence on the extreme northern continent, which comes from the crystallization of the wisdom of the demon mages.

A magic energy crystal is about the same size as an ordinary green brick, and its surname is somewhat like a magic crystal, containing abundant elemental power, which can be used as a source of mana for consumption such as magic arrays and magic items.

The Magic Crystal, on the other hand, is not a mineral deposit or comes from some kind of Demonic Beast, it comes from cheap Blackstone Ore. The genius mages of the demons gain elemental power by burning black stones, convert them into the most original magic power through special magic arrays, and form magic energy crystals for storage.

This kind of top-notch magic skill is the same as the magic crystal shuttle, which is the top secret of the demon race, and the titan barbarians have spent hundreds of years, and they have used a lot of manpower and material resources to get a glimpse of the mystery.

With the huge amount of black stone deposits in the ground around the Blackstone Magic Castle, the Demon Race has continuously mined, and built large and small refining furnaces to refine magic energy crystals in the Demon Castle, and the final finished product is used in the Demon Crystal Shuttle, large magic array, underground planting farms and other places, supporting the magic civilization of the Demon Race, and after hundreds of years of development, it has accumulated a huge force that can now counterattack the Nine Heavens Continent.

And Han Fei broke into this place, which was one of the warehouses used to store magic energy crystals!

(To be continued)