The energy of the hedron slowly burned out, and the light pillar of the crystal furnace quickly dimmed, but soon, the subsequent minecarts continued to pour the hedron into the furnace.

The crystal furnace burned incessantly, and the pale green glow of the hearth was like a dark abyss, endlessly devouring the endless energy source.

Chen Lingfeng and Lisa entered from the north gate at the metal suspension ladder inside the crystal furnace, and there was still a drop of dozens of meters from the platform at the end of the minecart track. To get down the ladder, you have to go down the metal ladder layer by layer.

While observing the terrain, the two of them stared at the closed gate on the opposite side, which was not connected to the hanging ladder on this side, but it was the passage to the main entrance of the Crystal Furnace Tower.

It had been a long time since the flare was fired, and Chen Lingfeng and Lisa couldn't help but feel a little anxious, and began to worry about the safety of the frontal breakthrough team.

Finally, after another half an hour, there was a rush of footsteps from the closed gate opposite.

Soon the gate slowly opened to both sides, but the people on the other side were even more anxious, and before the gate was fully opened, they squeezed through the crack in the door.

The man stumbled to the guardrail of the ladder and nearly fell straight from it. The uniform he was wearing was tattered, revealing the dark muscles inside.

When Lisa saw this man, she immediately became alarmed, as it was none other than the Blackface God, the Overseer's Chief Non-commissioned Officer in Slum Three.

At this time, the black-faced god also spotted them, and a trace of surprise flashed on his face, but it quickly turned into a fierce and unwilling gaze. He picked up the pistol and pulled the trigger frantically at Chen Lingfeng and Lisa.

Seeing this, Chen Lingfeng and Lisa immediately dodged, but no bullets came out of the black-faced god's gun, only the impact of the trigger "click, click".

The black-faced god looked at the gun in his hand and threw it out with all his might. Then he glared at Chen Lingfeng and the others, turned around and ran towards the control room in the crystal furnace.

Shortly after the black-faced god left, there was another noise at the gate. This time it was the sound of footsteps accompanied by an explosion.

After the explosion, a giant hammer flew in from outside the gate, it was the hammer of the Thor that had been destroyed by Chen Lingfeng and Lisa earlier.

The hammer tumbled and fell into the pale green liquid beneath the platform, and disappeared without a trace.

Behind the smoke from the explosion near the gate, two figures flashed in, and the weapons in their hands rose with the energy of frost and flame, which was none other than Ning Yu and Fox Fire. The combat uniforms of the two were somewhat torn, but there were no signs of injuries on their bodies.

"Are you two alright?" Fox Fire put away his weapon and shouted at Chen Lingfeng and Lisa on the opposite side.

Lisa smiled and gave a thumbs up to the foxfire.

"Where's that black stupid big guy?" Foxfire continued to ask.

"Go to the control room in the back of there." Lisa lifted her finger and pointed to the building below the foxfire that was leaning against the wall of the crystal furnace.

"Forget it, don't worry about that guy, the attacking Thor mecha guarding has all been wiped out by us, and the soldiers outside have also been controlled by Daddy, and now only that stupid big guy is left, and he can't become a climate, so it's important to get the energy spar quickly." Fox Fire looked at the black-faced god who was cowering in the control room, and motioned for Ning Yu to go directly to the platform below to get the energy crystal.

Ning Yu stared at the control room and nodded. It is not clear what the enemy will do next, but a quick victory is indeed the best option at this stage.

Stepping on the suspension ladder, the four of them approached the platform at the bottom of the crystal furnace from both sides. It didn't take long to get down to the platform.

"Boy, it's good, although I'm a little injured, it's great to be able to defeat Thor, let's let my sister hug me." The fox fire opened his arms and pounced on Chen Lingfeng.

"Master, your apprentice is also injured, don't you care?" Lisa suddenly inserted herself in front of Chen Lingfeng and pressed into Fox Fire's arms.

"Oh, you're really, well, you're not bad." Foxfire pushed Lisa away and symbolically touched her head.

"As soon as you relax, you start to be serious, hurry up and start doing things." Ning Yu pulled the fox fire aside.

"This is a high-purity energy source, and it only takes one piece to make a hedron blasting device with a huge amount of explosion." Lisa took the transparent blue hedron in her hand and weighed it.

"How much energy does Nighthawk One need to take off again?" Ning Yu asked, turned to look at the fox fire staring at the crystal furnace hearth, and hurriedly rushed over and grabbed her shoulder.

"Don't..."Ning Yu said quietly, and the hand holding the fox fire's shoulder began to tremble a little.

"Don't worry, I won't rush to the furnace if I don't figure out how to get the molten core in the furnace. As for Nighthawk One, it only needs a few hedrons, after all, it is a high-purity energy source. Foxfire patted Ning Yu's hand, turned around and smiled at her.

The "beep, beep" alarm suddenly sounded, followed by the voice of the black-faced god.

"You don't want to get out of here alive and turn into the slag of the crystal furnace like these crystals!"

"Sure enough, there is still a backhand, you two will go out with these hedrons first." Fox Huo stuffed the packed bag of spars into Chen Lingfeng's arms.

"But what about you two?" Chen Lingfeng took the spar in his arms and looked at the fox fire uneasily.

"Ah, the two of us have nothing to worry about, you guys go quickly." Fox Huo waved his hand at Chen Lingfeng and Lisa easily, urging them to leave quickly.

Just as Chen Lingfeng and the others turned around and were about to leave, the edge of the platform shook, and a circle of metal cages more than ten meters high suddenly rose, wrapping the entire platform.

Several men stood back to back with their weapons drawn, staring warily around.

In the middle of the night, the sound of breaking wind whistled.

"Above, spread out!" Ning Yu roared, and several people quickly dispersed.

There was a loud bang, and the falling weight smashed the solid platform into the depression.

Falling from above was a silver-white robot, with similar body proportions to Thor, but not as bulky as Thor, but more inclined to the agility of a sword and shield angel. The protruding golden armor on the chest is significantly thicker than Thor's, which can protect the power core of the mecha. On the left chest of the golden armor was left the letter "R" in italics.

The robot holds two giant revolvers in both hands, its pitch-black muzzles as if ready to erupt deadly flames.

"Damn, I didn't expect to see this nightmare mecha, codename: Roulette Killer." Foxfire frowned, his eyes showing a seriousness that he had never seen before.

"Is this something my mom made?" Although Chen Lingfeng already had the answer in his heart, he still didn't want to believe that his mother would create these demonic killing tools.

"This is indeed made by your mother, and like the previous FF-II attack mecha Thor, this is the FF-III annihilation mech revolver." Ning Yu clenched the long sword in his hand, and his expression was as serious as a fox fire.

"Ling Feng, your mother is a great person, and these mechs were not created to destroy humanity, but to protect the only remaining ray of hope. It's just that this angel's sword has been taken over by a demon......" Fox Fire sighed deeply.

"Be careful, that guy is going to attack." Ning Yu said as he looked at the mecha that stood up from the hollow hole.

The revolver's head turned, and then his eyes flashed red, and the two guns in his hands were aimed at the prey in the metal cage.