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Cook felt that he was slow enough, but he didn't expect that when he returned to the ground, it still caused a sensation, the flame giant seemed to be no different from an ordinary giant, reaching a height of five meters, that is, the height of a two-story building, this was the first captive that Cook exchanged for, as for the price, it was just a bottle of perfume, and Cook was trying to see if this flame giant could be cast in white iron.

"Flame Giant!" When Cook shackled the Flame Giant, the temperature around the Flame Giant's body immediately became extremely hot, and Cook immediately froze.

"Forbidden Demon Shackles!" Cook looked at the swarthy and inconspicuous shackles in his hand, for Cook, the value of this forbidden demon shackles was immeasurable, but Cook never expected that the Night Elves would use this kind of thing to lock up the Flame Giant, but Cook quickly put this thing away.

When Murphy and the representatives of the Wizards' Guild saw the Flame Giant, there was already a faint glow of fire magic on the Flame Giant's body, and Cook was even more surprised as he watched the Flame Giant's magic fluctuations become more and more intense.

"What level do I mean, you?" asked Cook, confused.

"My lord, I am a flame warrior. "The Flame Giant has a follower contract with Cook, and for these ancient races, as long as they promise, they will do it, and they are not as untrustworthy as humans.

"Flame Warrior?" Cook was confused, but Cook didn't dig deeper.

"Can you weld this?" said Cook, pulling out two white iron castings.

"Hehe, that's what we flame giants did in ancient times. The Flame Giant cracked its mouth and laughed.

"Okay, let's put it to the test. Cook handed the two white iron castings to the Flame Giant, and Cook did not know the details of the Flame Giant, because Cook was now in a hurry to build a ship.

Under Cook's astonished gaze, white flames erupted from the Flame Giant's hands, similar to the scene of oxygen welding, but at a higher temperature.

"My lord, I am in charge of this kind of thing in the tribe, and in Drow City, I am also in charge of repairing metal parts. "It took the Flame Giant less than ten seconds to fuse the two white iron castings together.

Not only was Cook surprised and inexplicable, but even Murphy had a big mouth, and as for Sina, who followed Cook, she looked indifferent.

"Murphy, check it. Cook immediately handed the white iron casting to Murphy, and Murphy and the representatives of the Wizards' Guild hurriedly left.

"What's your name?" said Cook, who had time to sit down and talk to the Flame Giant.

"My name, my name is Rupert. The Flame Giant replied respectfully.

During a casual conversation with Rupert, Cook learned that the Flame Giants were not natives of the third layer of the Underworld at all, but natives of the fifth layer of the world, and that some kind of change had taken place in the Fifth World, and the Flame Giants had to leave the fifth layer of the Underworld and go to the fourth layer, but they did not expect to be involved in the war with Drow.

As for why Drow was at war with the natives of the fourth estate, Rupert didn't know very well, and to Cook's surprise, Rupert had been captured for more than ten years.

"Isn't there anyone to save you?" asked Cook, confused.

"Impossible, what the underground world lacks most is people, whether we capture Drow or are captured, there is no reason to put it back. Rupert replied with a shake of his head.

"So what happened to the Fifth World to force you Flame Giants to leave?" Cook asked thoughtfully.

"Leaky, leaky at the top, and what we Flame Giants are most afraid of is water, with the exception of drinking water. Rupert said the reason that Cook thought was incredible, but in fact, the flame giant could not touch water at all, and once it touched, the flame giant's skin would fall off, and it had to be said that the heavens were fair.

"And what races are you opposed to Drow?" asked Cook again.

"That's a lot, minotaurs, antelope people, takin people, and centaurs, gnomes, underground dwarves, dozens of races anyway. Rupert gave several examples.

Cook asked again, "So have you ever heard of the Flame Titan?"

"Well, it's said that there are Fire Titans in the Sixth World. "Cook really didn't expect that the Flame Giant would really be able to know about the Flame Titan.

"However, the danger of the sixth layer is too great, and even we dare not enter it lightly. Rupert then added.

Cook blinked and asked, "Why?"

"Because a small half of the sixth layer of the world is full of magma, volcanoes, ordinary people go in, the poisonous gas is enough to kill some people, and the other sixth layer of the world also has the black dragon life of the dragon clan. It is said that the Titans and the Black Dragon have fought more than once, so it is an extremely dangerous area, even more dangerous than the seventh layer. Rupert explained.

"The seventh world?" Cook asked curiously.

"Yes, the seventh-level world is actually a world of fire elements, but all the low-level fire-elemental creatures live there, and the high-level ones are in the eighth-level world. "Rupert is an indigenous, and he knows all these things.

Cook's mouth was wide open, but his heart was overjoyed, because Rupert knew enough information to benefit Cook.

"Your Excellency, Lord Baron, it's perfect, it's perfect. A man rushed in and said loudly, and Cook saw that this was not the representative of the Wizards' Guild.

"Lord Baron, we have found that this welded white iron casting is as if it had been cast in its entirety, and it is too perfect. Faced with Cook's surprise, the representative of the Wizards' Guild immediately explained excitedly.

"Great!" Cook said excitedly.

"Rupert, do you have any relatives who have been captured by Drow?" Cook asked, turning to ask, the Underworld used to calling the elves of Drow City Drow, and Cook did as he could.

"Your Excellency, you mean?" Rupert looked at Cook in disbelief.

"Yes, I will still rescue your people, of course you will need to work for me. Cook nodded in explanation.

"Yes, yes, and!" Rupert nodded with his head.

When Cook led Rupert to the dockyard, he was also stunned when he saw pieces of white iron castings weighing tens of tons.

Although Robert has also repaired countless metal machines in the underground world, the most of them are only hundreds of kilograms of accessories, but what is here, an ordinary casting is tens of tons.

"My lord, we may not be able to do this job. Rupert said to Cook after reading it.

Cook stared at Rupert and asked, "Why?"

"Because we are not suitable for living on the mainland, there is too much water, even the air is wet. Rupert explained.

Cook froze, but Cook asked in a whisper, "Can I fence this place off and then put a roof on it?"

"My lord, we are still used to dry, hot environments. Rupert shook his head and replied firmly.

"I'll figure it out!" Cook said through gritted teeth.

Then Cook had to find a big enough mountain on the edge of the lake and dig a cave, yes, this is where the Flame Giant worked, and Cook was extremely unlucky, in the process of digging, he actually dug out an underground water source, and had to change places.

However, the progress of shipbuilding was still delayed, firstly because only Rupert was working as a flame giant for the time being, and on the other hand, there was a shortage of iron ore as a raw material.

"Murphy, do you think there is someone making trouble with this raw material?" Cook was so depressed, things were going on one after another, and he didn't have time to cultivate at all.

"No, the main thing is that our consumption is too huge, since the construction of the dock, more than 5,000 tons of white iron have been produced, and this is the total output of white iron in the past ten years, and the mine is mined by manpower. Murphy shook his head and explained.

"Your Excellency, Your Excellency, Your Excellency Rupert has been wounded. Just then, a dwarf ran in and said loudly.

"What, let's go!" Cook immediately stood up when he heard this, knowing that Cook didn't want to make a bad impression on the natives of the underworld.