Lin Xiuxian smirked as he said, "It's not easy to get. A knight came back from the Earth-elements Realm a few days ago. He found a small part of it in the Earth-elements Realm and left it to a friend of mine for sale. See whether it's enough!"
Lin Xiuxian said as he passed that lead cylinder to Zhang Tie.
After taking the lead cylinder, Zhang Tie unscrewed it. Closely after that, a fist-sized golden crystal flew out of the lead cylinder towards the ceiling like a balloon which got rid of a kid's hand. Zhang Tie instantly caught that crystal and covered the lead cylinder.
"Watch out, if it really flew away, I would not be able to stop it …" Lin Xiuxian hurriedly warned Zhang Tie.
Zhang Tie nodded as he pinched that fist-sized crystal and started to watch it seriously.
The fist-sized crystal was like a combination of gold and crystal. It had a metallic luster and was semi-transparent. What was more, as long as he loosened his grip, it would fly away. Even though he was holding it, Zhang Tie could still sense that it was eager to get rid of his grip.
It was the most expensive and mysterious metal in the world. It was the raw material for the core components of airboats in Taixia Country — — air floating gold.
It was Zhang Tie's first time to see the look of an original air floating gold ore.
"How many more are there in the lead cylinder?"
"7 more in the same size!"
"Fine, thanks …" Zhang Tie said as he unscrewed the lead cylinder and put that piece of air floating gold back into it. After that, he took the lead cylinder and put it into a space-teleportation finger ring. Strangely, the moment the piece of air floating gold was put into the lead cylinder, it became docile and just floated there quietly.
After that, Zhang Tie took out 14 earth-element crystals from his space-teleportation finger ring and pushed them in front of Lin Xiuxian.
During this process, Lin Xiuxian and Zhu Daqian watched Zhang Tie's space-teleportation finger ring with amazed looks. They watched Zhang Tie taking items out of the space-teleportation finger ring and putting them in like magic.
Space-teleportation equipment was rare for knights, not to mention rune alchemists. Since Zhang Tie showed that space-teleportation finger ring to them for the first time, the two people had been shocked.
"F * ck, when this father becomes rich and promotes to a craftsman master, this father will also get a portable space-teleportation equipment …" Lin Xiuxian said as he hurriedly put those earth-element crystals into a portable storage bag. These element crystals must be very eye-catching than space-teleportation finger rings.
"If you want to promote to a craftsman master, you might have to wait for a long time. Actually, how about opening two secret pearls in Taiyi City after accumulating enough earth-element crystals?" Zhu Daqian said as he "glared" at Zhang Tie's space-teleportation finger ring for a short while. "Your space-teleportation finger ring is too eye-catching.
It's okay for you to stay in Heavenly Craftsmanship City; however, if you want to leave the city, you have to be careful. Even knights would be jealous of this item. As a LV 10 strong fighter, if someone robbed you of your belongings, he would not even blink his eyes. If there's a demon in people's heart, he would act like a demon. Your space-teleportation equipment could make people possessed by a demon! "Lin Xiuxian warned Zhang Tie after putting away the earth-element crystals.
"Thanks for your warning, Brother Lin. I know. I know a bit of disguise skill. I will protect myself outside!" Zhang Tie said with a faint smile, "But I don't know whether Brother Lin could get more air floating gold. We can negotiate the price!"
"Air floating gold is a product of Earth-elements Realm. The largest mine of air floating gold in Earth-elements Realm is in the hands of the imperial households of Taixia Country. Besides the imperial households of Taixia Country, nobody else could have access to such a large amount of air floating gold. What I've brought here was discovered by a knight in a mine in Earth-elements Realm. Additionally, besides the imperial households of Taixia Country, commoners could barely use air floating gold. The secret method of making airboats out of air floating gold is in the hands of the imperial households of Taixia Country!" Lin Xiuxian threw a serious glance at Zhang Tie, "As for rune instrument masters like us, the rune compatibility of air floating gold is too poor. Additionally, it couldn't be integrated with other metals. Even though we could barely make a set of air floating gold equipment, we couldn't use it at all. It's like flying a kite when wearing it. We couldn't decide how to move it. Previously, a rune instrument master in Heavenly Craftsmanship City made a pair of wings using air floating gold and wore it. Although it looked cool, as it was hard to control the direction in the sky, that rune instrument master almost fell to his death. What do you want so much air floating gold for …"
"To tell you the truth, I'm going to design a wholly new set of steam centrifugal cannons. As the main bearing of steam centrifugal cannons faces a big problem when it runs at a high speed, I'm going to collect some air floating gold to make a set of air floating gold bearing which could bear a high rotation speed with zero abrasion and high durability …" Zhang Tie said as he started to draw on the table where they were drinking.
This bar was especially for rune instrument manufacturing masters. It was normal for rune instrument manufacturing masters to discuss various equipment and design drawings. Therefore, the table was a magnetic rune drawing platform. Anyone could draw what was in his mind on the table whenever he had the inspiration so as to facilitate the discussion with the surrounding people.
Zhang Tie was drawing the simple design of steam centrifugal cannons on the table.
Although it was drawn by Zhang Tie casually, as a rune instrument master, Zhang Tie's drawing was like the drawings made by other designers using rulers and compasses. The lines were straight without any wrinkles and the circles were perfectly round. In less than 1 minute, Zhang Tie had drawn an approximate design sketch of steam centrifugal cannons on the table along with the approximate parameter symbols.
Lin Xiuxian and Zhu Daqian watched Zhang Tie's drawing seriously as they frowned. After a long while, Zhu Daqian stroked his chin as he asked Zhang Tie, "Your design is a bit interesting. I find that the main turntable of your steam centrifugal cannons is closer to the design of the traditional energy-storing flywheel. This design requires the flywheel to run in vacuum so as to minimize the energy loss. Additionally, it adopts a non-contact suspension main bearing. Although it could maximize the speed of the flywheel and increase the speed of the ammunition, its input would also increase by many times; especially the suspension main bearing is made of air floating gold. It's not cost-effective on the scale of input and output. If you have time and effort to make this thing, you could make over 10 common steam centrifugal cannons, which would have a strike effect several times greater than this one. Do you want to participate in the annual steam centrifugal shooting range contest held by the Rune Instrument Masters Union with this thing …" Zhu Daqian said as he watched Zhang Tie seriously for a short while. Closely after that, he shook his head as he said, "It's impossible. Rune instrument masters below secret rune craftsman should participate in that contest. Old Tie, it's unnecessary for you to participate in it …"
"No …" Lin Xiuxian's eyes suddenly flickered as he said, "Old Tie, you've got another trick. Here …" Lin Xiuxian pointed at the drawing on the table, saying, "Old Tie, it seems that you've left one thing here …"
Zhang Tie let out a sigh inside, 'What a veteran who has stayed in Heavenly Craftsmanship City for dozens of years. His insight is really extraordinary. Only by looking at the rough drawing in front of him, he has already identified the interface of a function module that I've left.'
Now that Lin Xiuxian had already seen through it, Zhang Tie didn't need to hide it anymore. Therefore, he drew another symbol on the place pointed by Lin Xiuxian, which was a common symbol used by rune instrument masters for communication.
"High-speed air-floating gold vacuum flywheel centrifugal disk plus an explosive high-pressure steam propulsion valve. Even though its cost is very high, it should be enough to kill a battle spirit. However, it seems to be making a fuss over a trifle …" Lin Xiuxian suddenly widened his eyes as he watched Zhang Tie, saying, "Old Tie, do you also want to make a steam centrifugal cannon that could kill a knight?"
Zhang Tie rubbed his face as he asked, "What do you mean?"
"Because I've seen a similar design dozens of years ago. It was designed by my master; however, he didn't succeed in the end!" Lin Xiuxian let out a sigh as he started to perfect the sketch, "I was still young at that time. My master was already a major craftsman. He also had an ambition to make equipment and weapons that could kill knights. Finally, he chose steam centrifugal cannons as his breakthrough. At that time, my master also chose steam centrifugal cannons with flywheel structure. My master thought that the flywheel could reach 200,000 rpm at its highest speed. If he could make a flywheel whose diameter was hundreds of meters, the linear speed of the edge of the flywheel might reach a terrifying level. Anything thrown out by the flywheel at such a high speed would have a great kinetic energy. When this great kinetic energy reached a certain degree, it could kill knights. However …" Lin Xiuxian sighed as he reached out his hand to perfect the sketch, "My master was already a major craftsman at that time. At that time, he also had an ambition to make equipment and weapons that could kill knights.
However … "" However, did your master find that the linear speed of the edge of any flywheel could only be below the speed of sound? It could be infinitely close to the speed of sound; however, it could never surpass the speed of sound. The theoretical speed of the flywheel of 200,000 rpm was limited to the flywheel with a small diameter in the vacuum. As long as the flywheel was directly enlarged, it would reach its physical limit! "Zhang Tie replied with a bitter smile.
"Hmm, that's right. Later on, my master thought of another method — — add an explosive high-pressure steam propulsion valve to the shell the moment it left the flywheel. Even so, after 2 decades' efforts, my master could only make the initial speed of the shell reach about 1,700 m per second, which was 5 times the speed of sound. Although the steam centrifugal cannon could kill a battle spirit, it still couldn't kill a knight …"
"What happened later on?"
Lin Xiuxian pursed his lips as his eyes turned red, "That old b * stard was not reconciled to that. Finally, he thought of a method — — abandon the design of explosive high-pressure steam propulsion valve; instead, he wanted to increase the initial speed of the steam centrifugal cannon by the explosion of pure alchemist's bomb. After a few experiments, he exploded himself and left me alone in Heavenly Craftsmanship City!" Lin Xiuxian watched Zhang Tie as he said seriously, "Old Tie, I know you're not short of money; however, many talented rune instrument masters want to leave their names in the history and become the top human rune instrument masters; however, none of them succeeded …"
Zhang Tie knew that Lin Xiuxian was telling the truth; because what Lin Xiuxian said was the result that Zhang Tie got in the lab and Castle of Black Iron over the past 2 months. The maximal linear speed of the edge of the flywheel of the steam centrifugal cannon could only approach 340 m per second. Additionally, the maximum initial speed of the shell could only be below 2,000 m per second due to the limitation of the power of the steam explosion.
"I still want to have a try. Perhaps there's another method!"
"There are two methods. One is to make the linear speed of the flywheel exceed the speed of sound; the other is to add a greater assistance to the shell of the steam centrifugal cannon. However, we've already seen the limit of the assistance of steam. As for alchemist's bomb, it's not reliable at all. It's too intense. Before killing the enemy, it has already killed its own people …"
"Steam and alchemist's bomb are not the only methods!"
"You're right. Before my master died, he had a sudden epiphany. He said that someone might be able to increase the initial velocity of the shell of the steam centrifugal cannon or break through the maximal linear speed of the flywheel by rune array. However, rune array is the top immortal craftsman's skill among rune instrument masters. There are less than 10 immortal craftsmen's rune instrument masters across Taixia Country. What's more, none of the runes that rune instrument masters could use could increase the speed of a non-living object. The Rune Instrument Masters Union has been spending a lot of efforts in the Earth-elements Realm every year. They want to find such far-ancient runes from the Earth-elements Realm; however, they didn't make any achievement. I even doubt whether such a rune existed in far-ancient times. Old Tie, it's very, very difficult for you to take this road …"
"I know it's very, very difficult; however, there are at least two ways for me to continue. If I don't have a try, I will feel a bit unwilling. I will do my best and leave it to the God!" Zhang Tie let out a sigh.
Over the past two months, after so many attempts and failures, Zhang Tie's obsession remained unchanged. However, he was clearer about the road that he was going to face. If it was really easy to walk on this road, to be honest, it might have been walked by others for many times. Zhang Tie would not have a chance to try it now.
"Then, I can only wish you good luck. In a few days, I will leave Heavenly Craftsmanship City for Yunzhou Province. Hongsheng Palace in Yunzhou City, Meng Family is going to build a Class A city. I have a friendship with an elder of Meng Family. He invited me to preside over the city defense system of Meng Family and offered me 1 million gold coins as a reward. I will also earn some pocket money. Today, I will bid farewell to you two..."
Zhu Daqian also revealed a bitter smile, "You've also accepted a task? I might go to Military Province City to register in a couple of days! "
"What's the matter?"
"Didn't I design a mini nitrogen separator before? I'm a bit proficient in separating nitrogen from the air. Previously, I thought it was not very useful. I've not imagined that an official of Weiji General's temporary command came to Heavenly Craftsmanship City yesterday and invited me to participate in the design of a weapon project in a military factory in Huanzhou Province …"
'I've not imagined that Zhu Daqian's event is related to me.' Zhang Tie could only sigh that the world was too small. Of course, the official who came to invite Zhu Daqian was not arranged by Zhang Tie; instead, he might be the subordinate of Lu Yanyu. At this moment, Zhang Tie didn't know what to say.
"What weapon project?"
"A fire-spitting tank that uses fiery oil. I'm responsible for the nitrogen liquefaction device in the tank!"
"Fire-spitting tank?" Lin Xiuxian was evidently shocked. However, Zhang Tie remained calm as he had long predicted it. When Fire-Dragon Bounty Territory took out those fiery oil weapons, Zhang Tie had already imagined that Taixia Country would definitely make more powerful weapons. He was just making a start. "Of course, look at the situation in the theater of operations.
Fiery oil production bases are being built everywhere. The fields are covered with fermenting tanks and earthworms raising ponds of Qianji Hermit's Earth Pulp. It's even more boisterous than when the war is not in progress. Qianji Hermit really has an unfathomable ability. Previously, these provinces were in a gloomy atmosphere; however, only after he took over the position of Weiji General for a few months, he had almost swept away all the depression among the people in Huanzhou Province, Kangzhou Province, Ningzhou Province. All the commoners, major clans and officials are enthusiastic about it. Even many factories in Heavenly Craftsmanship City have started to study fiery oil weapons. No wonder he could be selected as Weiji General by Commander-in-Chief An! "Zhu Daqian said with an admiring look.
"Ahem ahem, Qianji Hermit might just be a bit lucky. It's said that he's still young and knows nothing!" Zhang Tie said after coughing twice.
"Hahaha, Old Tie, we all know that you're ambitious; however, Qianji Hermit is indeed a real hero. He's affectionate and righteous. His meritorious deeds and fame couldn't be matched by us. It's said that he has an Iron-Dragon Sect in Youzhou Province. Before you came here last year, Old Zhu and I were negotiating that if we were bored of staying in Heavenly Craftsmanship City, we could go to Iron-Dragon Sect in Youzhou Province. Based on our abilities, we might not be refused by them …" Lin Xiuxian said as he burst into laughter.
"Based on your abilities, Old Tie, if you really go to Iron-Dragon Sect, Qianji Hermit would definitely open a meeting for you and let you take charge of the sect independently!" Zhang Tie replied with a smile.
"Hahaha, thanks for your auspicious words, Old Tie. Oh, how long will you stay in Heavenly Craftsmanship City? If you stay here for a long time, I will introduce some friends to you in a couple of days …"
"I'm going to leave Heavenly Craftsmanship City. After staying in Heavenly Craftsmanship City for over 2 months, I've made a lot of achievements. Something indeed couldn't be done in a hurry. I could only think about it step by step. As the world is becoming more and more chaotic, if I don't get that thing, I want to improve my battle strength and cultivate seriously for a period so as to promote to another level as soon as possible. It's never a bad thing!"
After staying in Heavenly Craftsmanship City for over 2 months, Zhang Tie's biggest achievement was that he understood the difficulties and obstacles that he had to overcome in order to realize his idea. They couldn't be solved in a day; they couldn't even be solved by his current rune instrument manufacturing level. After figuring out this point, Zhang Tie intended to leave Heavenly Craftsmanship City as it was meaningless for him to stay in Heavenly Craftsmanship City anymore.
Therefore, Zhang Tie wanted to deepen into the theater of operations alone for the sake of promoting to a shadow knight. In Zhang Tie's opinion, Weiji General was just an undeserved title. If others could give it to him today, they could take it away tomorrow. The vanity in officialdom was really nothing serious for Zhang Tie. As Meng Shidao of the Gobbling Party was still coveting him in Xuanyuan Hill, Zhang Tie didn't want to be too involved in the officialdom of Taixia Country, which was not good for him.
As for a knight, battle strength and rank were the biggest reliance. After deepening into the theater of operations, Zhang Tie could at least kill some demon knights or make trouble for demons and Heavens Reaching Church so as to relieve the stress in the rear. Over the past 2 months, although Taixia Country had already recovered, the situation facing the theater of operations was still not optimistic. As a knight, Zhang Tie could barely stay idle at this moment …
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