Heaven-defying Upgrade System

Ku Rugu was shocked. The Blood-Bone Gun in his hand started waving crazily. In an instant, a bright light shone, and the attack became even fiercer. However... There was still an even brighter blood-red light that was swimming rapidly under the attack of his long spear.    

    

After a while, the brighter blood-red light seemed to have understood the attack pattern of his Blood-Bone Gun. It suddenly increased in strength and slammed into the Blood-Bone Gun.    

    

"Bang!"    

    

The speed was very fast, and the force was even more ferocious. A red circle of light burst out, and it actually shook Ku Rugu so much that he held the long spear horizontally in front of his chest, and his entire body was involuntarily sent flying.    

    

Everyone looked at Liu Fei in shock. They saw that he was holding a blood-red magic treasure that looked like a scepter in his hand.    

    

Just now, Liu Fei had used the power of the Blood Devil Staff to send Ku Rugu flying, but he didn't cause too much damage to Ku Rugu. His Blood-Bone Gun had suffered almost all of the damage.    

    

Holding the Blood Devil Staff in his hand, Liu Fei felt unpleasant in his heart. His strength was already very powerful amongst these people, but when it came to fighting a Fifth Layer of Earth Core Stage Ku Rugu... Furthermore, the consumption of his Genuine Qi was much greater than usual. It seemed like the gap between their cultivation realms was still affected. Furthermore, the Blood-Bone Gun in Ku Rugu's hand... The quality of the Exquisite Magic Treasure was obviously an Exquisite Magic Treasure, or a spirit treasure above the Exquisite Magic Treasure...    

    

With a bang, Ku Rugu's feet stomped on the ground. He instantly stood up, and killing intent suddenly rose from his body. After that, he shouted at the two little brothers who were guarding Zhu Yan'er, "Watch that woman for me!"    

    

Ku Rugu already had the intention to kill. At this time, the most important thing was to control Liu Fei and prevent him from escaping. As long as Zhu Yan'er was still here, according to Liu Fei's temperament, he definitely would not leave this place easily.    

    

Holding the Blood-Bone Gun tightly in his hand, Ku Rugu was also shocked by the exchange just now. He was a Fifth Layer of Earth Core Stage warrior, and he had the support of a Artificial Spirit Treasure, the Blood-Bone Gun. But in the end, he was forced back by a puny Spiritual Core Stage warrior like Liu Fei?    

    

Impossible... Ku Rugu's expression was still incomparably gloomy. He thought that he must have underestimated his opponent just now. Judging from Liu Fei's attack just now, it seemed like it had reached the limit of his strength. In other words, the Genuine Qi that Liu Fei used just now was the largest amount of Genuine Qi that he could circulate. If this continued, Liu Fei wouldn't be able to use such a technique many times.    

    

"Hmph!"    

    

Ku Rugu coldly harrumphed and rushed forward like a fierce wind. As soon as Liu Fei walked out of the room, he saw numerous spear shadows in front of him. These spear shadows came from all directions and instantly wrapped around Liu Fei.    

    

"Boom!"    

    

A huge explosion sounded, shaking the entire territory of Dead Wood Group. Ku Rugu's cold eyes revealed a sinister smile, "Liu Fei, go to hell!"    

    

Only Ku Rugu knew the power of this spear. It was a spear shadow that came from all directions. The attack was watertight. No matter how Liu Fei dodged, he could not dodge it. He could only watch helplessly as he was swallowed by this powerful spear shadow.    

    

In an instant, Liu Fei's figure became extremely dim in the midst of the densely packed blood spear shadows. He was like a dried leaf in a fire, about to be burned to ashes.    

    

"No... No..."    

    

Zhu Yan'er, who was standing not far away, saw this scene and shook her head crazily. At the same time, the anger in her heart could not be controlled and it rose up. A purple flame like aura instantly erupted from her body. It looked extremely gloomy. The two Dead Wood Group members who were guarding him immediately looked at her alertly. They couldn't help but feel afraid. This Qi was actually emitted from Zhu Yan'er's body. She was only a Mortal Core Stage warrior, but she actually had such a terrifying Qi. What exactly was going on?    

    

The two of them couldn't understand, but they didn't forget their responsibilities. One of the members said, "You must keep an eye on her!" As he spoke, he mustered his courage and took a step forward. He directly stood in front of Zhu Yan'er and said through gritted teeth, "You better behave yourself!"    

    

It was fine if this member did not speak. When he made a move and said those words, Zhu Yan'er's face suddenly became extremely gloomy. She actually stretched out her arm and grabbed that member's neck.    

    

"Ah..."    

    

That member immediately struggled, but his voice became faintly discernible in an instant. It was as if he was fiercely restrained by something.    

    

"What are you trying to do!?" The other member did not expect Zhu Yan'er to suddenly launch an attack, and immediately raised the weapon in her hand to attack. However, the member of the Dead Wood Group who was grabbed by Zhu Yan'er struggled intensely. He swayed left and right, causing the other member to raise his weapon but did not dare to attack. He was worried that he might accidentally hurt his companion.    

    

The member standing next to him couldn't help but get angry and curse: "Damn it, you can't even take care of a woman! Hit her!" Seeing his companion being tightly restrained by a woman, this person felt very annoyed. His companion should not be so cowardly!    

    

Following that, Zhu Yan'er suddenly shouted in a low voice. That member who was held by her neck started to twitch all over. The twitching movement slowly decreased and finally became motionless.    

    

The other member was shocked. Only then did he realize that... There was a mysterious force on Zhu Yan'er's body that actually killed his companion in an instant. He could no longer bear it. The Longsword in his hand bypassed his companion's corpse. Suddenly! If he didn't attack now, his fate would be as miserable as his companion's.    

    

The blood-red light faded and Liu Fei's body instantly became shorter. However, his body stood still on the spot, and the dark golden light on his body flowed. That was the light of the Gold-Owl Clothes. There was also a layer of green flame rising from the outside. Under the double defense, Liu Fei was able to withstand Ku Rugu's powerful attack. However, his entire body seemed to be falling apart. The huge impact of the Blood-Bone Gun... It was extremely powerful.    

    

Even the arm that was holding the Blood Devil Staff was trembling slightly, but it was continuously charging the Blood Devil Staff. Within Liu Fei's body, he was also accumulating energy for the Angry Thunder Hammer. He was trying to unleash his strongest attack and knock Ku Rugu down with a single strike.    

    

At this moment, Liu Fei could also use the Profound Heavenly Change, but he realized that... The side effects of the Profound Heavenly Change were too great. It was useless to use it now. Whether or not he could kill Ku Rugu, who was a few levels higher than him, was one thing, even if he could win. However, in a weakened state, Ku Rugu's subordinates were not easy to deal with.    

    

At this moment, Liu Fei had also noticed the situation on Zhu Yan'er's side. Facing the attack of the Dead Wood Group members, her fate could only be controlled by herself!    

    

The bitingly cold sword tip pierced towards Zhu Yan'er's abdomen!