Gu Yige followed everyone towards the metal city, and his heart was equally shocked, not knowing what had happened to him.

"His meridians and dantian have been abolished by the black-robed man three years ago, his body is damaged, and his strength has not been able to grow. How did he suddenly reach such a terrifying level of strength, much stronger than a martial artist of the same level, and he directly became a fourfold martial artist in the flesh. ”

Gu Yige's heart was full of questions, silently guessing the reason for the changes in his body.

If you let others know that Gu Yige was still a waste who couldn't practice before he came here, and he became a fourfold martial artist with a physical body overnight, he would probably go crazy.

There are many disciples in the Refining Sect, and after practicing for more than ten years, they still stay in the triple body of the flesh. Once you become a martial artist with a fourfold body body, you are an inner disciple of the sect, and you will get a lot of resources, which shows the difficulty of cultivation.

And Gu Yige has crossed more than ten years of cultivation time of others overnight, how can it not make people crazy.

Fortunately, Gu Yige's personality is simple, and he doesn't think about things he can't understand. Follow the crowd to the gate of the huge metal city, and see three big words written on the tall gate: "The Third Prison." ”

The Third Prison.

Looking at the name of the Third Prison, Gu Yige couldn't help but think of the seven black dots he saw in the air. The seven black dots were the seven huge metal cities, and because they were far from the ground in the sky at that time, the huge cities became a small black dot in his eyes.

And the third prison is one of the black spots, I don't know what the other cities are called, whether they are arranged in order.

Gu Yige used to use the [Pulse Contemplation] technique to analyze what he saw, so in the sky, when he saw these seven black dots and seven metal cities, he always felt a sense of incompatibility.

In retrospect, it felt like the weak point he observed when he was fighting people.

These seven cities gave him the same feeling, as if they were the weak points and flaws of this world, and they seemed so incongruous.

But if you want to talk about how to crack this flaw, Gu Yige can't say, he can't really attack these seven cities, don't say that the warriors living here can't let it. Even if no one stops it, who has such a great power to destroy the city, I'm afraid that no one in the entire continent will be able to do it.

Standing in front of the metal city, everyone felt that the big city was like a metal mountain with no edge in sight. When I entered it, I realized that this was really a metal mountain.

Metal roads, metal houses, rivers formed by metal liquids, mountains of metal piled up one after another.

The metal castle sits north and faces south, with a wide iron road in the north-south direction and wide streets in the east-west direction, dividing the city into countless squares.

There are houses to live in, shops to sell, and buildings for various purposes, but the common denominator is that they are all made of metal and nothing else.

Outside the street is a large river of metallic liquid, which flows red like lava underground.

Beyond that, there is a mountain of countless piles of metal, shining with dazzling light.

Directly north of the castle, there is a huge metal mountain at the highest point, and at the top of the hill there is a metal mansion, looking down on the entire metal castle.

Gu Yige stood still and looked at the mansion on the mountain, not knowing what he was thinking.

Eight Skimmers came over and pushed him: "Look at what, this is the mansion of our third prison master, and the entire third prison is the prison master's, hurry up." ”

Although Ba Zhihu hated Gu Yige in his heart, he didn't dare to do anything to him, this guy even dared to beat the prison warden, he didn't dare to provoke easily. And he also realized that Gu Yige had already entered the sight of some people, and he might be able to soar in the future, so it was not good to offend too much now.

The crowd followed Ba Skihu to a metal compound with the words "Mine Prison" written on the door.

Just as everyone was about to enter the courtyard, a voice suddenly sounded.

"I heard that someone beat Gao Kuroko, let me see who is so bold?" A bald man appeared in front of the group, shirtless, with a metal sword like a door panel on his back.

When Ba Qiaohu saw the bald man, he hurriedly ran over and said, "Warden Warner, why are you here?"

The bald man glanced at the beard with disdain: "Why can't the people from my hunting prison come to the place where you mine the prison, or can Gao Heizi beat me and drive me out of his territory." ”

"Yes, yes, of course, you are the warden, and the high warden is also the warden, of course you can come. ”

"Show me, who hit the high sunspot?"

Ba Qiaohu hurriedly pointed out Gu Yige to the bald man, and the bald man circled around Gu Yige, and said: "Unexpectedly, he looks white and clean, and he actually dried up Gao Heizi, and his teeth are good." What tonic did you take, so violent. Tell me, I'm going to get some to eat too. ”

Gu Yige thought about it seriously, he could change so much in such a short period of time. I'm afraid there is only one possibility, that is, the black iron in his body has changed, otherwise he really can't think of what makes his body so strong.

Gu Yige looked at the bald man and said seriously: "I ate a piece of black iron, and my strength will increase, do you want to try it." ”

The bald man's eyes widened, and a powerful momentum pressed towards Gu Yige's body, as if to restrain him and strangle him.

A gleam flashed in Gu Yige's eyes, he could fight back under the hundreds of punches of the black-faced big man Gaofeng, he was used to such momentum. The internal organs agitated and made a thunderous sound, shattering all the momentum of the bald man.

The bald man looked at Gu Yige, suddenly cracked his mouth, and laughed.

"I like it with character, guts, and strength. Rest assured, I will send you to a hunting prison and make you a powerful warrior. Mining in the mountains is not something that a man should do at all, and only the gloomy personality of Takakuro is suitable there. ”

After speaking, the bald man took a deep look at Gu Yige, then turned to leave.

The white-faced scholar and the gray-clothed man glanced at each other, and thought at the same time: "Sure enough, in the eyes of the upper echelons, the hunting prison has more information than the mine prison, and it is also free to move." ”

Ba Xuanhu let out a sigh of relief, who dares to offend this master in the third prison, that is looking for death.

The bald man is the most powerful warrior in the rank of prison director, and he is also the warden of the hunting prison, holding great power and being appreciated by the prison master.

"I didn't expect this kid to be able to get into the eyes of this master, it's really lucky. ”

Ba Xuanhu didn't dare to delay, took Gu Yige and the others into the compound, and said to the strong men under him: "Put them in the dungeon of the two pole pools and lock them up for one night, and see who dares to cause trouble." ”

Gu Yige and the others were taken into a dungeon, and the inside of the dungeon was very dark, and they couldn't see their fingers.

As soon as he entered the door, the smell of metal came from Gu Yige's nose, as well as the sound of liquid metal flowing. Gu Yige used his five senses, and through the sounds and smells, the scene inside the dungeon was clearly reflected in his mind.

Underneath the dungeon is a metal pool, filled with liquid metal.

Before Gu Yige could continue to observe, he was pushed in the back, and the whole person fell into the metal pool. Then came a sensation of extreme coldness from the metal pool, followed by an extremely scorching thrill.

Suddenly, Gu Yige felt that the left half of his body, including his organs, muscles and bones had become extremely cold. The right half of the body, organs, and muscles became unbearably hot.

Gu Yige was shocked, and before he could investigate what was going on, he heard a continuous sound of plopping and plopping, and the prisoners were all thrown into the metal pool.

There was a heavy slamming of the door of the dungeon, and everyone was completely locked inside.

Bursts of exclamations and cries rang out, and everyone felt this alternating cold and heat, and the feeling of unbearable pain. So everyone began to curse, some scolded Gao Feng, some scolded Ba Hu, and some scolded Gu Yige. If it weren't for the trouble, they wouldn't be locked up here.

Gu Yige didn't speak, but quietly felt the feeling brought by the liquid of the metal pool.

This feeling of extreme heat and cold, he had experienced before.

When he was on a metal ship, in order to make the metal ship resist the attack of the iron vulture, he used the black iron in his body to melt the huge black iron to coat the metal ship.

At that time, the huge black iron was cold and piercing, and the black iron in the body was scorching and unbearable. The feeling of one inside and one outside, one cold and one hot, is the same as the current feeling of one left and one right, half cold and half scorching.

Gu Yige thought that on the big ship, he could use the scorching heat of the black iron block to melt the cold of the huge black iron, so now can he use the scorching heat on the left to fuse the cold on the right.

Thinking of this, Gu Yige took a deep breath, and his body began to shake slowly.

After this vibration reached the limit, it began to transmit to his body layer by layer, driving his organs to move slowly, and the internal energy also turned from left to right in his body, centered on his abdomen.

The internal energy of the rotation is like a waterwheel, bringing up the cold on the left side and pouring it into the scorching heat on the right. At the same time, he poured the scorching heat on the right into the cold on the left.

The cold and scorching heat slowly began to merge in the ancient one's body, and the cold and scorching heat could no longer be felt, but instead there was a refreshing feeling.

And with the operation of internal strength, Gu Yige found that the cold and hot energy entering the body began to be absorbed by the organs, making the organs stronger.

Gu Yige was suddenly surprised and delighted, he wanted to neutralize the feeling of heat and cold, so that his body would not be in pain. I didn't expect it to be able to absorb the energy in the metal to strengthen the organs.

"However, how is this possible, I have never heard that the energy in metal can be absorbed by people, and the martial artist should absorb the aura of heaven and earth when he cultivates, how can he absorb the energy in the metal. ”

Although he had doubts in his heart, this did not affect Gu Yige's actions, and after closing his eyes, he silently began to use his internal strength to absorb the energy in the metal pool.