"You're a fool!" Metal Mentor Froya cackled madly. "Did you think you'd won?"

By this time, the massive, raging steel vortex formed by the Flying Magic Keys was complete, generating a terrifying suction force. Contractors within might barely stand and move, but launching an attack was impossible. She spread her arms wide in the terrifying storm of the Flying Magic Keys, raised her head, and pulled out a potion that emitted a faint, dark golden light. "This is a powerful potion that costs a full ten points of merit and ten thousand universal points to exchange! And you need a Nightmare Imprint rank of Major to buy it! After drinking it, it not only instantly restores my health to its maximum, but also forms a temporary shield around me! The shield's health equals three times my maximum health. That means I now have six hundred health points! Can you fight me? Do you dare fight me? Now you have two desperate choices: either be torn to pieces by the raging steel vortex formed by the Flying Magic Keys, or be scraped inch by inch with metal shards after I get out!"

Fang Senyan ripped off his shirt, revealing his strong, muscular upper body. Each muscle seemed to contain explosive power. Though covered in wounds, Fang Senyan, standing in the doorway with his arms spread wide, was like a wounded beast, even more ferocious, mad, and bloodthirsty! He licked the blood flowing down his face, the bloody taste stimulating his eyes as if they were burning, filled with fiery, arrogant, and rebellious intent.

"I choose the third option, Metal Mentor! I choose to stay here and watch you be torn apart alive by the raging steel vortex! I will live, and you will die!!!"

Metal Mentor Froya laughed, her laughter filled with mockery, as if she would cry tears of laughter. After drinking the potion, a faint dark golden light emanated from her mouth to her throat, and even her abdomen was somewhat translucent, as if she had swallowed a sun. Then, the dark golden light spread throughout her body, finally transforming into a dark golden shield around her, its surface even shimmering like water.

At this time, all the Flying Magic Keys were completely mad, forming a gigantic, terrifying black vortex. Throughout the hall, sparks flew from the stone walls and the ground, and the ear-piercing scraping sound almost broke eardrums. Death was stirring everything madly!

Fang Senyan said nothing more, the corners of his mouth curling up slightly. He simply extended his right hand,

open to the sky,

and then pointed his middle finger at the Metal Mentor,

beckoning evilly,

just like when he used to tease waitresses in bars when he was a sailor.

In this life-or-death moment!

Metal Mentor's fists clenched. She didn't want to say anything more, her venomous eyes fixed on Fang Senyan's body. She wanted to watch this guy be torn apart alive, shredded, and slowly tortured by this raging steel vortex. Only then could she dispel even a fraction of the hatred in her heart!

At this moment, any position in the entire hall would simultaneously suffer indiscriminate, massive damage, being attacked by two mad Flying Magic Keys every second!

Because the Flying Magic Keys had the ability to ignore any defensive effects, the priority level of this special effect even possessed the terrifying special effect of "domain priority," and the frequency of damage was extremely fast. Therefore, under the current world difficulty, the damage could not be too high. Usually, it rarely exceeded ten points. According to Fang Senyan's calculations, the average damage per Flying Magic Key was about 6 points.

Fang Senyan had previously been attacked by the raging steel vortex triggered by Deco and Phil, so his health was probably only around two hundred and eighty points. However, he possessed the powerful talent of Tenacity, which would only reduce his health by two points per second. Conversely, although the Metal Mentor had as much as six hundred health points, she had no way to weaken the damage of the frantically piercing Flying Magic Keys. The damage she received every second was at least 12 points!

This meant that even without counting the automatic health regeneration of both sides, the Metal Mentor could only last for up to fifty seconds in the raging steel vortex, while Fang Senyan could last for two and a half minutes! Fang Senyan had calculated the difference between them clearly, so he was so calm.

After persisting in the raging steel vortex for about thirty seconds, the Metal Mentor began to notice something was wrong, because her six hundred health points had been reduced by more than half, leaving only two hundred and forty points. Under normal circumstances, even if Fang Senyan carried a drug that could instantly restore 100% of his health, he would inevitably be in critical condition by now, and should absolutely not be standing in front of that mysterious and ancient stone door with such a calm demeanor mixed with a faint mockery.

The instinct to survive made the Metal Mentor walk forward with extreme difficulty in the mad metal vortex, reaching out her hand little by little, trying to push Fang Senyan away. Although Fang Senyan also could not attack in the raging steel vortex that resembled a typhoon, he folded his arms in front of his chest and coldly watched the Metal Mentor. If this woman, as a system contractor, was stronger than him in strength, then Fang Senyan had nothing to say.

The violent storm blew past, bringing the sigh of death and cruel plundering. Fang Senyan coldly met the Metal Mentor's gaze. The Metal Mentor's dark golden shield had already shattered, and a large number of terrible wounds with dripping blood had begun to appear on her body, but she was completely unaware. Her emerald green, resentful pupils stared blankly at Fang Senyan, and then she suddenly screamed angrily:

"I know, you must have a natural defensive

talent as an mt (main-tank tactical core tank)! You must be!"

Saying that, the Metal Mentor stretched out her hand towards Fang Senyan's face, as if to touch the deepest secret of his soul. But at this time, the raging steel vortex had become even more violent and mad, even stained with a faint crimson. Fang Senyan could clearly see that on the arm that the Metal Mentor stretched out in front of him, the armor was quickly cut into pieces and peeled off. Next was the flesh, and then only the dense white bones remained. Finally, even the fingers formed by the white bones were instantly cut into ash-like scattered debris, and finally blown away by the wind!

Looking at such a tragic scene, Fang Senyan sighed, and a faint, indescribable melancholy suddenly surged in his heart. He lowered his eyes and said faintly:

"Amen."

With great effort, Fang Senyan closed that heavy and ancient mysterious stone door. After isolating the raging steel vortex behind him with the thick stone wall, his ears suddenly became quiet. Leaning against the stone door, he took out a bottle of prepared water from the Nightmare Imprint and took a sip, licked his lips, leaned his head against the stone door, closed his eyes, and began to rest.

Although his body was resting, Fang Senyan's thoughts did not stop.

Although the Metal Mentor died indirectly at his hands, Fang Senyan still had to say with certainty that she was the strongest contractor he had encountered so far. Even the mysterious woman "Zi" he encountered in the Caribbean Sea world was definitely inferior to the Metal Mentor in strength.

And Nu's strength was equally terrifying. Just the huge, thick-armored Stegosaurus he summoned could compete with a legendary creature, a mountain troll, in a one-on-one fight!

If these two people had not wholeheartedly abandoned the melee defense-type contractor, completely using them as cannon fodder, Fang Senyan would not have minded further cooperation with them.

It was a pity that the Metal Mentor and Nu would not trust another person at all except for each other. They were like moths flying into the flame, tirelessly pursuing their ideals and beliefs, while treating all other people as tools that could be used.

Fang Senyan, of course, was not willing to be just a tool,

and a tool that could be sacrificed at any time.

Therefore, the contradiction between them was actually irreconcilable, belonging to the kind where one of you must die for me to live, just like the deep and incomparable gap between the proletariat and the capitalists. Therefore, in the mysterious and heavy stone door before, only one side was destined to walk out alive.

"A natural defensive talent as an mt (main-tank tactical core tank), huh? Sounds pretty impressive, I like this name."

Fang Senyan patted his face with cold water, shook his head, and stood up. At this time, he was alone. He should be extra careful in front of this defense line known as the Metal Digestion System. Strictly speaking, this place should have been built by the goblins when they remodeled Gringotts, which means it only has a history of five thousand years – well, the word "only" is a bit inappropriate.

Appearing in front of Fang Senyan was a long corridor, at least six meters high and seven or eight meters wide. The ground and walls were pieced together with giant stones of at least five meters square. Although it had undergone the vicissitudes of time and remoteness, it still seemed solemn and majestic. There were exquisite reliefs and patterns on the walls. Every six meters or so on both sides of the corridor, there would be lifelike stone sculptures as high as three meters, either goblins or dwarves, holding torches in different poses. When Fang Senyan carefully passed by, the torches they held would light up in turn, and they would automatically extinguish when he moved away.