Heaven-defying Upgrade System

C141 Underground City



C141 Underground City

"Everybody, get ready. Come with me!" Liu Fei said. He had the experience of digging a hole twice. He knew that there was an unknown amount of danger hidden in this hole, so he was extremely careful.    

    

Everyone was fully armed.    

    

Liu Fei and Nangong Yingjie were leading the way, while Tang Cheng and Yama were at the end of the line, guarding against any possible dangers that might come later.    

    

"Who is it?"    

    

Liu Fei and the others had just walked out of the tunnel when a voice suddenly rang out. Looking closely, it was two cultivators! Furthermore, the aura emitted from these two cultivators... It was the aura of the Cultivator of the Devil Clan that Liu Fei and the others were familiar with.    

    

They never thought that there would be a Corpse Devil Army here!    

    

It was as if they had stepped on iron shoes and searched everywhere!    

    

When the two guards at the passageway were alerted, all of a sudden, the Blood Devil Staff in Liu Fei's hand flew out. The two soldiers of the Corpse Devil Army... Before they could defend themselves, the Blood Devil Staff flashed twice on their chests. It broke through! The Blood Devil Staff returned to Liu Fei's hand.    

    

"What... what is this place? There is actually such a huge city!" Nangong Yingjie, who was standing beside Liu Fei, could not help but exclaim.    

    

Liu Fei and the others were also stunned at the same time. They saw that there was a huge city underground. The houses were lined up in rows, and they looked neat and tidy. This was an underground city! In the deepest part of the underground city, there was a tower shaped building. At the top of the tower shaped building, there was a huge pearl emitting white light shining brightly.    

    

The originally dark underground city was illuminated as bright as day.    

    

"Wuwuwu..."    

    

At the same time, a series of hurried cries sounded. Liu Fei and the others' expressions turned cold. It sounded as if it was the sound of the defense system here.    

    

After a while, above the underground city, suddenly, a few streaks of light streaked past. Liu Fei and the others looked over and saw a group of Devil Clan Cultivators. There were dozens of people, and there were more than a dozen Earth Core Stage warriors among them. The rest of them had even reached the peak of the Spiritual Core Stage.    

    

"What a powerful Qi!"    

    

When these experts gathered together, the aura they emitted was something they had never seen before.    

    

Among them, there seemed to be a leader who took a step forward. Standing in front of Liu Fei and the others, he said coldly, "A bunch of reckless bastards. How dare they trespass the forbidden area of Corpse Devil? Humph! Humph! Since they are here, don't even think about leaving! "    

    

In the face of Liu Fei's group of over a thousand men, none of them showed any signs of fear. Instead, they lunged at them.    

    

Liu Fei and the others faced so many strong people, and there was no fear on their faces, but they heard Liu Fei lightly say, "Set up the formation!"    

    

The Sky Whistling Team's members immediately formed the strongest Nine Palace Sword Formation. A few days ago, under the guidance of Yama, every small Nine Palace Sword Formation could form a Great Nine Palace Sword Formation of 81 people. These 81 people formed a group, a total of nine groups, forming the strongest Nine Palace Sword Formation. When the sword formation was deployed, a dazzling light was immediately emitted from the sky. It was formed by the cold sword light.    

    

In an instant, the Qi of the strongest Nine Palace Sword Formation was unleashed, crushing the Qi of the Devil Clan's Cultivator.    

    

The dazzling light streaked across the sky, and it surged towards them like a raging storm!    

    

Although the Corpse Devil's army consisted of experts, and there were even a dozen of them who had reached the Earth Core Stage, they still felt a great pressure from the sudden attack of the sword formation.    

    

"They are just a group of cultivators who are not even at the fourth level of Spiritual Core Stage. How can they have such a powerful Qi?"    

    

These Cultivators of Devil Clan didn't know the true power of the Nine Palace Sword Formation, they were just shocked.    

    

Liu Fei, Nangong Yingjie, and the others didn't attack. They just stood aside and looked at the numerous Cultivators of the Devil Clan that were enveloped by the sword formation.    

    

"This formation is simply a miracle!" Chen Guangqing said in surprise. The moment the formation was deployed, the combined strength of each person and even each group was far from being as simple as one plus one equals two. It was unknown how many times his strength had increased. At the same time, Chen Guangqing glanced at Yama.    

    

This mysterious figure was actually able to strengthen the Nine Palace Sword Formation that Liu Fei had taught him. This was truly amazing!    

    

"Roar!"    

    

A furious roar was heard. After the Cultivator of the Devil Clan came into contact with the Nine Palace Sword Formation, they were instantly shocked by the formidable power of the Nine Palace Sword Formation. They couldn't help but feel angry. They were Earth Core Stage warriors, but they were weaker than a group of Spiritual Core Stage warriors!    

    

In just a short while, those Devil Clan Cultivators were shocked by the power of the Nine Palace Sword Formation, and they kept retreating. Once the Nine Palace Sword Formation was unleashed, very few people could dodge it.    

    

Nangong Yingjie and Tang Cheng looked at the members of the Sky Whistling Team and nodded with relief. The Sky Whistling Team had undoubtedly become a sharp army.    

    

The Cultivator on the other side had already transformed into a devil. Its body was incomparably huge, and its strength, speed, and all other attributes had increased tremendously in an instant.    

    

Despite this, they didn't have any special treasures under the Nine Palace Sword Formation. They were unable to break the formation of the Nine Palace Sword Formation. The piercingly cold sword light was emitting beams of cold light. As the pace of the battle grew faster and faster, its power also increased.    

    

In just a short while, thirty to forty people had fallen under the Nine Palace Sword Formation. Only a few Earth Core Stage warriors with stronger cultivation bases could feel the tremendous power of the Nine Palace Sword Formation.    

    

Yama, who was standing beside Liu Fei, chuckled and said, "The sword formation that I have comprehended from the Flame Dragon Sword Spell is indeed not bad. It's a pity that the genius who is well-versed in sword intent... Due to the limitation of his cultivation base, his comprehension ability was slightly lower. However, after my modification, this formation has already displayed its full power. The Nine Palace Sword Formation cast by nearly a thousand members... Even an Earth Core Stage warrior would feel a tingling sensation on his scalp."    

    

Liu Fei smiled and said, "Furthermore, they have already acquired a supreme grade talent. Whether it is their comprehension ability or their daily cultivation, they have far surpassed their usual abilities."    

    

Yan Luo said. "That's right. This Nine Heavenly Marks is indeed a supreme grade talent that is hard to come by in thousands of years. It has even completely changed our bloodline."    

    

Liu Fei was slightly stunned. He did not expect that Yama would be able to see through the characteristics of the Nine Rolls of Heaven so quickly. It seemed to be able to change a person's bloodline, and cause a tremendous change in the foundation of a person.    

    

At this moment, Nangong Yingjie looked at the Corpse Devil Army in the underground city, who was watching the battle from afar. He realized that these Corpse Devil Army were actually very weak. In other words, there were still some true experts who had yet to appear.    

    

The remaining few Cultivators of the Devil Clan couldn't hold on much longer. Under the biting cold sword light, their mutated bodies were instantly cut into pieces.    

    

Only three or four people fled in panic.    

    

Immediately after that, two red lights sped over from afar.    

    


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