Fnos Darkville turned his head and was surprised to find the human following him, his face full of the flattery and deference of a small man.

"Anything else?" He frowned slightly and said. Truth be told, he had a crush on the human, and didn't want to call the guards over and drive them away.

"That's right, master," said Diego with his head bowed, he noticed that the title made the dwarf's brow stretch a lot, which made him feel a lot more at ease, "I also worked on engineering object restoration in my hometown of Stormwind, although they are all vulgar country things, and they are not at all comparable to the big ones you have seen, but I think maybe I can provide you with a little humble construction, you know, even the greatest designer may miss some inconspicuous subtleties?" ”

The chief of the dwarves smiled "hehe", and in this human, he almost saw the shadow of himself before his beginning. The ambition to climb upwards and the deliberate drilling around are so familiar, as if in an instant, he made a decision to give this human a chance, maybe there will be a miracle?

"The four most important safes in this vault can't be opened, what do you think will be the problem?" Darkville asked, pointing to the vault inside. It's a small test, and if this human doesn't know anything about engineering, then he'll turn around and go, and he won't waste any more time on him.

"I think there may be a problem with the trigger between the Golden Energy Core and the Precision Aojin Converter, I have repaired this elastic switch many times before, the magic cloth wrapped around the Mithril structure is very unstable, it is especially easy to slip, and then it will lead to energy leakage, if the magic pattern cloth is replaced with rune cloth, it will be better......" Diego gushed, he said endlessly, he looked exactly like the kind of ambitious person who clings to the first opportunity, completely dispelling the last trace of vigilance of the dwarven craftsman.

"Why do you think it's not the clockwork synchronous coordination gyroscope and the fuse between the real silver transformer that is wrong?" Darkville pressed further, in fact, he had just checked the fuse, and it hadn't blown out—it was one of the few devices he could see clearly. However, he didn't notice that his tone had changed, and it was now two engineers discussing academic issues on an equal footing.

"You may not have noticed that there is a paper-shaped Mithril tube behind that fuse, in fact, the thin Mithril tube is filled with coolant to cool the fuse, but this also loses the original purpose of setting up this fuse, it is to burn out when the energy is unstable!" Diego explained, but at the same time, he deliberately exposed his own shallowness, in fact, with his Draenor mastery engineering level, it was impossible not to know what was going on.

"That fuse is a stress insurance, not an energy insurance, and it's designed to prevent the clockwork synchronous coordination gyroscope from spinning too fast." The Chief Dwarven triumphantly pointed out Diego's "shallowness", because it reflected his own cleverness, but at this moment, the Chief Dwarven suddenly realized that there might be some truth in what this human said, and that he might have really missed something.

"I see, you really deserve to be a knowledgeable master!" Diego said "in a flash of dawn".

"Well, come with me, maybe you can really help." Darkville turned around and walked towards the vault. He couldn't wait to work on this damn complex machine with this human.

Diego and Masrae looked at each other and hurriedly followed him.

The guards at the gate of the Treasury did not question their presence in any way, and in their opinion, the identity and status of Fornos Darkville had guaranteed their credibility. The guards even took the initiative to open the door to the vault for them, and closed it from behind once they entered.

Darkville locked the door from the inside and headed inside the vault.

"Now that no one bothers us, let's find out what's wrong with the mechanical toy left behind by Frank Ron Cast Iron!" Like a master showing his home to visitors, he motioned for the adventurers to follow him.

The vault was empty at the moment, except for two heavy combat golems that were three meters tall, but fortunately they were not activated, but even so, they were full of oppression, and they were too large for such an indoor space.

"Wow, that's magnificent!" Looking at the countless safes on the walls around him, Diego was dizzying in admiration, looking like a hillbilly who had never seen the world.

But in fact, he had been searching the treasure trove for a long time, and he soon found a mural on one of the humble walls of the vault.

Diego glanced at the portrait casually, and he immediately recognized the old dwarf in the portrait, his red braid was extremely rare among the black iron dwarves with black, white, and gray beards, and was easily recognizable.

"Himreel, Dark Guardian." He said silently in his heart. In fact, the portrait is an indication of who holds the four most important keys to the safe. Because for security, the keys to the four most important safes in the vault are kept by the six Guardians in turn.

Moreover, these six guardians never stay in one place at a time, they are always wandering around the Darkfurnace City, and they are dressed in ordinary clothes, not at all conspicuous, and they look no different from any ordinary black iron dwarves. But for a veteran like Diego, it won't be difficult to find them. Diego doesn't intend to do that, though. Because as an engineer who is about to repair the treasure chest opening mechanism, he has an advantage that others don't have.

"Alright, don't stand stupid, come and help!" Darkville smugly scolded, with this human, he could feel the sense of superiority over all aspects of his knowledge and IQ at any time, which made him feel a little fluttery.

The place where Darkville stands is a humble corner. But Diego was keenly aware that the floor of the entire treasury was covered with hard tiles, which were hexagonal, and the floor of the room looked like a giant beehive. The floor tile at the head of the dwarven craftsman looked the same as the others. Just as the adventurers looked at each other in confusion, Darkville proudly pressed down the six corners of the floor tiles in a certain order.

In the center of the hall, a three-meter-square floor rose and moved sideways.

A mechanical world appeared in front of them, and just below the floor, thousands of bearings, gears, pipes, and strange contraptions were installed, and it was dazzling and breathtaking!

These parts and devices rotate and swing like a giant clock, and some of them spew out white high-temperature steam from time to time.

"Wow! It's nothing short of a miracle! Diego exclaimed from the bottom of his heart, and if the initial admiration was somewhat pretentious, now he was truly struck by the ingenuity of the design. It's like primitive people seeing TV, and earthlings seeing alien spaceships, completely unconscious!

"Can you see that?" Darkville asked mockingly, not with any ill intentions, for he knew exactly how he felt when he first saw the machine.

"I'll have to look at it carefully to be sure." To the surprise of the chief dwarven craftsman, the human didn't look overwhelmed, and he bent down - in fact, he almost had to climb to it, carefully identifying every part of the machine.

"This is supposed to be a golden energy core, but it's installed in a Mithril shell, but as far as I know, Mithril can't isolate energy from escaping, which doesn't make sense at all......"

"This is a clockwork synchronous coordination gyroscope, but it is designed to be an oval, which makes it difficult to calculate the effect of wind resistance on it when rotating at high speeds, and I wonder how Frank Ron Cast Iron solved this problem back then......

"This link device uses high-speed bronze gears, but as far as I know, the bronze gears are completely unable to withstand wear and tear at this speed, and will soon break, oh, this gear is a strange color, it has emerald green edges, oh my God, he mixed it with Thorsilver! But copper, tin and silver alloys, is it really possible? ”

“……”

It was only at this moment that Diego knew that his master engineering attainments of Drano were only made according to the drawings, and compared to the mechanical device in front of him, it was like just a bunch of scattered basic knowledge, perhaps a few steps ahead in the use of new materials, but without ingenious inspiration and ideas in series, it was like a plate of loose sand, and it was completely impossible to achieve the architecture and organic combination of the system. Just like an old craftsman, if you ask him to make a picture, he can do it very well, but if you want him to design a picture by himself, it is very difficult. (Writing this, I am reminded of the manufacturing of the Celestial Empire, alas...... ）

He felt like a frog sitting in a deep well, and at this moment, the superiority of the traverser was shattered in front of this device, and the M1 Garand rifle, which he once thought was clever, was like a child in front of this device, and it was completely inadequate. The gap between him and Frank Rohn, in a word, is the lack of creative power, just like the stonemason and the master sculptor, two completely different concepts of technology and art, one step apart, a world apart.

Diego finds himself fully immersed in a sea of engineering, where every ingenious design is an inspiration to him, and every whimsical idea inspires him. Diego has completely forgotten why he came here, he is like a thirsty sponge, greedily absorbing the design ideas and inspiration of the first craftsman of the dwarves, he believes that if he can leave alive, his engineering level will definitely break through the shackles and improve by leaps and bounds.

It wasn't until Vernos Darkville impatiently pulled him several times that he was dragged out of the world of engineering.

"What's the matter, don't you see I'm busy?!" Diego, who was disturbed, roared angrily, but when he saw that it was the chief dwarven craftsman, he hurriedly changed to another face of sincere fear, "What do you command?" ”

"Do you see what's wrong?" Darkville was obviously a little dissatisfied, and asked with a sinking face.

"Well, this ......" Diego scratched his head, to be honest, he had just been looking back at Frank Ron Cast Iron's design idea in the real thing, and he didn't bother to find out where something was wrong. He scrambled around looking in his mind for something that wasn't working properly, and luckily he found it quickly.

…………

Note: The engineering terms and engineering devices mentioned in this chapter are real in Azeroth, and you can check them out.

Unlike engineering in the broad sense of the word, Azeroth's engineering is rather narrow, and it should be called mechanical engineering or explosive engineering.

In Azeroth, engineers can harness their outstanding creative power to create a large number of very practical mechanisms. Through constant repairs, improvements, and the endurance of mechanical failures and squibs, the Engineer will eventually create quite unique items such as goggles, scopes, or parachutes, powerful firearms, unstable explosives, mechanic minions and mechanical pets, mechanical crews, and all sorts of bizarre parts needed for these devices.

Successful engineers can solve problems with their inventions and make themselves and their teammates faster and stronger. At the same time, a qualified engineer often has some experience in forging and mining, as metals and ores are the basic materials for their inventions.

In Azeroth, there are different branches of engineering: the Goblin School of Engineering or the Gnome School of Engineering, each of which prides itself on its technology and competes with each other. Sometimes, these competitions are not benign.