At the northernmost end of the Five Elements Sect, there is a mushroom mountain that is not big or small, with vast rock and soil, overturned slag and stones, and no grass grows.

There is an iron ore vein at the bottom of the rock and soil, and the survey shows that the iron ore vein stretches for hundreds of miles along the direction of the Weiran Mountains.

The history of the Five Elements Sect mining this iron ore has been more than 1,000 years, smelting stone into iron, wrought iron into steel, accumulating over time, and the waste slag has piled up into this mushroom mountain. Not far from the entrance of the cave of the ore vein, there is the factory of the Five Elements Sect for refining ore, a truss building supported by a steel skeleton, about 8 meters high, 20 meters wide, and about 200 meters long.

From the selection of iron ore, to the refining of furnaces, to the tempering of steel, the molding of pottery, to the assembly of equipment, all of them are completed here.

Towards evening, Xiao Su brought him here, and before he could go in, he smelled a pungent smell of burnt pig iron.

Workers are busy coming in and out, truckloads of raw ore are pulled out of the burrows and transported into the factory, and truckloads of slag are transported out of the factory and piled up on the edge of the mushroom mountain.

Inside is an orderly and busy scene, ore selection, rough melting, wrought iron tempering, assembly line operations. More than a dozen men with five big and three thick, sturdy physiques, bare upper bodies, muscular, sweating profusely, wielding huge hammers in unison, striking the fiery red wrought iron.

As he walked, suddenly, a wave of heat hit, and ten meters in front of him, a cylindrical furnace with a capacity of thirty cubic meters was red, the flames were running upward, the green smoke was billowing out, and the high temperature was scorching the surrounding air.

Su San's seniors, who were directing the production, saw the two of them, so they came over and said with a smile: "Young master, third son, why are you here!"

Xiao Su took out the small porcelain bottle containing the stone, handed it over, and said softly: "This is a little stone I collected today, you take it, add it to you before, and see if it reaches the addition of forging 3 tons of high-grade steel." ”

"Okay, I'll go!" Su San gently took the small porcelain vase and turned to leave.

Zixiu's attention was completely drawn to a few small monsters under the ceramic furnace.

Yikes!

Yikes!

"Xiao Su, these fire-breathing guys are salamanders, right?" he asked in surprise, glaring.

"Yes, salamanders, also known as saloon snakes, were brought by Yourou from the Western Realm, and they are good at breathing fire, and with the fire source they provide, they can control the heat in the furnace very well!" Xiao Su replied indifferently.

A total of four salamanders the size of domestic dogs sat around the bottom of the furnace hanging in the air, spitting out red flames one bite after another. Salamanders have well-developed forelimbs, covered with black and red scales, and have a face resembling an eagle's beak, a slightly larger beak with a curved hook, dark black, and hard as iron. Saroman snakes, commonly known as salamanders, reproduce in a vegetative reproduction manner. A salamander will give birth to a larva every ten years, and they will keep the larvae inside the fire pit until they reach maturity.

Salamanders are mostly used to assist furnace workers and blacksmiths, and their ability to handle metal in flames has made them famously excellent blacksmiths.

"Your arsenal is small in scale, but it's quite professional!" he said with a heartfelt admiration as he looked at the well-trained workers and the salamanders that specialized in providing flames.

"So-so!" Xiao Su looked up at the five-meter-high cylindrical furnace and said, "Brother Xiu, you see, the molten iron in this furnace is what I prepared for Windranger 3.0, adding the limestone to it, it is enough to forge about 3 tons of high-grade steel." ”

At this time, Su San's predecessor came back again, weighing the white porcelain vial in his hand, and said with a smile: "Young master, it's just right, thirteen grams of stone is enough for three tons of high-grade steel!"

"Okay, let's add it now, tonight, arrange for the foundry to work overtime overnight, according to the drawings I made, and finish casting all the components of Windranger 3.0, and I will personally supervise it here!" Xiao Su said with a solemn expression.

"Everything is subject to the young master's arrangement!" Su San didn't dare to slack off, and called the salamander, which had always been a little bigger, to come over.

This salamander is supposed to be their leader, with big black eyes, cute and well-behaved.

Su San's predecessor muttered a few words, and the salamander seemed to be able to understand human words, and opened the eagle hook beak, and then he pulled out the wooden cork of the porcelain bottle and poured all the stones inside into the salamander's mouth little by little.

The salamander took the stone in its mouth, and without delay, ran towards the furnace with its strong forearms, its sonorous front paws, not afraid of the blazing outer walls of the furnace, grasping at it.

Sou!

In the blink of an eye, it was on the top of the stove, and stood at the edge of the stove for a moment, staring at its big black eyes, as if something was brewing. Then, it lowered its head, and pointed its hook beak at the fire below, and a bright red fireball suddenly burst out of its mouth and scurried into the furnace.

Whew!

There was a violent reaction in the furnace, and strange noises came and went.

The salamander jumped directly from the top of the furnace and returned to its original position, along with the other three salamanders, spitting red flames at the bottom of the furnace, and the frequency increased significantly.

"The temperature is not enough, and the frequency of the fire breathing needs to be accelerated!" Xiao Su commanded.

Su San nodded, and from his sleeve, he took out four quail egg-sized fire spirit stones, the fire spirit stones were red all over, and their energy was pure. He walked over and fed each of the four salamanders a fire spirit stone. They swallowed the fire spirit stone in one gulp, their energy was replenished, the speed of spitting fire was greatly increased, and the tongue of fire they spewed out was much larger than before.

Under the scorching flame, the ceramic furnace became translucent, and the boiling molten iron inside was clearly visible, and as the stone slowly melted inside, the molten iron gradually turned from fiery red to blood red. Inside the entire furnace, the churning blood-red molten iron was shining red, like a blooming rose.

"Su San, you go and arrange for the foundry to come over now, I'll watch here, after an hour, open the furnace and release the water!" Under the scorching heat of the high-temperature stove, several of them were red on their faces and sweating profusely.

"Yes!"

Salamanders, who are well-known as iron-making experts, keep the temperature in the furnace at around 3,000 degrees Celsius by constantly spitting out tongues of fire, which is difficult to do with ordinary fuels, refined coal, and fuel oil.

Four salamanders, tirelessly spitting tongues of fire, and themselves, unaffected by the heat.

"By the way, Xiao Su, why do the characteristics of stainless steel improve much after adding the stone?" Zixiu was sweating profusely, his hair was soaked, he wiped the sweat on his face with his hand, and asked with a smile.

"With the addition of granule in it, the adhesive characteristics of the granite molecules can firmly polymerize the steel molecules together, which not only improves the density of the steel, but also makes the toughness and stiffness more balanced, and doubles the Poisson strength!"

This is the difference between special steel and general steel.

"In this way, high-grade steel can be used to make first-class armor and weapons, but unfortunately, the material is too rare!" he nodded and sighed.

"It's too hot here, let's go out and talk!" Xiao Su smiled slightly, and on his face with fine skin and tender flesh, beads of sweat the size of beans fell from his cheeks one by one.

At night, the cool breeze is gentle.

"It's much cooler outside!" Zixiu took a deep breath.

The whirring valley breeze, with cool air, blows on the face, and a refreshing feeling is as cool as bathing in the stream!

Xiao Su smiled slightly: "Therefore, steelmaking is a hard job, with high temperature and the danger of being splashed by molten slurry." From the selection of ore, refining molten iron, tempering, forming the standard, every process can not be lost, the most difficult is to collect the stone!"

The eastern continent and the southern Tunguska country, as well as the snowy wasteland in the north are bordered, and the war between each other is blazing, fighting each other, and a large number of high-grade steel are consumed every year, which also makes the reserves of the stone deposit decline year by year, and there is no new stone vein, and the entire eastern continent is in serious shortage.

"If a new vein can be discovered, all problems will be solved!" he sighed, hoping that there would be new discoveries in the Azure Mountains.

"I hope so!" Xiao Su smiled indifferently, suddenly thought of the matter of the Seven Kills Sword Technique, and asked: "Brother Xiu, where are you going tonight, I think you should rest for a day, and have broken through the first and second realms of the Seven Kills Sword Technique in a row, the Yuan Shen must have consumed a lot!"

"That's right, the Yuan Shen is a little tired!" he nodded and smiled happily: "Otherwise, I'll stay here with you tonight to see how you forge the Wind Speeder!"

"The windmill is the secret weapon of our Five Elements Sect, and it is generally not shown to outsiders!" Xiao Su winked and said mischievously.

"Treat me like an outsider!" he said, the index finger of his right hand tightened, and he was about to collapse again.

"How could it be, I'm just kidding!" Xiao Su's attitude immediately reversed, and he agreed with a smile: "Okay, tonight, the windmill to be built is a brand new Windranger 3.0 series, and the entire drawing is designed by me, so let you open your eyes, what is the strongest flying car!"

Xiao Su looks confident, everything is going well, the first wind speeder of the Windranger 3.0 series will be born tonight. Compared with the previous generation of wind speeders, the design scheme of the 3,0 series has the following significant improvements.

1. Flight speed per second: from 60m per second, to 100m per second.

2. Body material: from general stainless steel, improved to special stainless steel, the safety factor and stability are greatly improved.

3. Flight altitude: directly from 1000m to 10000m of the atmospheric ion layer.

4. Drive device: from the previous two wind wheels, increased to four, and the power system has been fully upgraded.