Diego and Masrae pushed the heavy door of the vault open a gap that could only accommodate people, slipped through it, and then closed the door again with as little dexterity as possible.

They turned around and saw that the dwarven guards were looking at him inquiringly, clearly puzzled by the two of them coming out on their own. Seeing that the two of them were empty-handed, the guards didn't show much vigilance.

"Master Darkville has comprehended the wonderful Heart of Steel inside, please be quiet and never disturb him, maybe soon, Darkforrd will have another Frank Ron Cast Iron. You're really lucky to be able to witness this great moment, unlike us, who have to run errands for Master Duckville. Diego shook the sledgehammer in his hand and said reluctantly, he looked like a driller who wanted to be by his boss's side at a critical moment, not missing any opportunity to please his boss.

"Kaz is on top, it's the heart of steel!" The dwarven guards were stunned and blurted out their true beliefs. You know, the Iron Heart state is almost only once in a dwarven craftsman's life, and some dwarven craftsmen who lack talent will not even encounter it in their lifetime. It is somewhat like the epiphany of an ancient monk, in which talented dwarven craftsmen break through their own bottlenecks and raise their craft to a realm that is difficult for mortals to reach. Respected by the entire dwarven race, the proud grandmaster Flacron Cast Iron had comprehended the Heart of Steel three times in his lifetime, cementing his position as the number one master craftsman in Azeroth.

"Okay, we're leaving, the master is in a hurry." Diego waved his hand and walked out of the bank, but before leaving, he told again, "Remember, don't disturb Master Darkville to comprehend the Iron Heart, or you will become sinners in Darkheart!" ”

"Absolutely not, with our lives guaranteed." The dwarven guards swore an oath in unison, they had forgotten their previous disdain for Darkville, and were thrilled to be able to witness this glorious moment. In their frenzy, they had no idea that the two thieves, who seemed to be empty-handed, had actually emptied the top and most precious treasures of Darkforge City.

The adventurers struggled to suppress the urge to laugh and returned the way they came. They walked unhurriedly and calmly, and almost no one could have imagined that these two people had just finished a great thing that would bring shame to the entire Black Iron Kingdom.

As they crossed the Bridge of Flames, they saw the pair of Living Treasure Guards again, and it was not yet time for them to change shifts. However, it seems that the previous brawl left a very conspicuous scar on both men. Gray Anvil's face was covered in blood, while the other dwarf, Dughhar, had bruised eyes that looked like a panda.

"On the day of your next gladiatorial fight? Sue me, I'll definitely go to the show. Anvil looked a little too drunk, and said with a wistful look in his eyes.

"Will your purse last until then?" His companion looked at him mockingly, and it was clear that the dwarf was stern with suspicion.

"Shut up, Dughhar, no one will take you for a dumb person!" Gray Anvil pounced with his fist. He's not in a good temper.

Not long after crossing the Bridge of Flames, they returned to the original three-way junction, and the two of them walked towards the temple of Thorrisen to the south.

It is a tall promenade-like building, and on the top of the stone gallery hangs a large flaming anvil flag, the traditional symbol of the Black Iron Dwarven tribe. On the walls of the corridor on both sides, there are beautiful dwarf stone carvings, which tell the history of dwarves from the Titan era to the present. If it weren't for Diego's hard pull, Masrae would have pounced on it and looked at it carefully.

This is the place where the Black Iron Dwarves worship, and at the end of the temple of Thorrison is a giant statue of Frank Ron Cast Iron. To tell the truth, in the eyes of the Black Iron Dwarves, although the King of Black Iron rules the Black Stone Abyss and is supreme, they will always respect those craftsmen with the most exquisite craftsmanship and transcendent status. Frank Ron Cast Iron is the best of these people.

Every year during the Midsummer Festival, the fire priests come here to hold a grand blessing ceremony. Today, however, there aren't many people in this corridor, except for a few twilight cultists with ill intentions.

When Diego and the others came to the end of the hallway, they saw these people.

The Fire Controller, Rogrenn, is a minotaur dressed in a red robe and carrying a red staff topped with a large ruby.

He is a shaman, which is not uncommon among minotaurs, but for Twilight cultists, it is rare.

Rowgreen was a respected member of the shamanic organization The Ring of the Earth, but he is believed to have taken a rough approach to the elementals - and this practice coincided with the Twilightists' use of violence to enslave the elementals to their advantage, so it is not surprising that he later joined the Twilight Hammer. He eventually arrives at the Blackstone Abyss as a messenger of the Twilight's Hammer, but suddenly becomes interested in the statue of the famous Black Iron architect Frank Ron Cast Iron. Although this may not be surprising in the eyes of others, in the eyes of Diego, there are many doubts, you must know that the key that can open almost all the secret doors of Darkfurnace City is under this statue, and that key is also the goal of adventurers' trip.

But in any case, there is no doubt that he is not the man of Dagran Thorrisson, the King of Dark Iron. And as far as Diego knows, the Twilight cultists have a bad heart and want to take control of this great city, and their cooperation with the Black Iron Dwarves is far less intimate than it seems, which makes it an opportunity for adventurers to take advantage of.

"Arbiter Griston sent us to do something!" Diego shook the gladiator badge in his hand and said arrogantly, he didn't seem to have any intention of explaining anything to the Twilight cultists. In fact, most of the gladiators in the arena were a bit rude, which is the style of reckless men who could hang up at any moment.

Rowgreen didn't say anything, he took a few steps and moved away from the statue. He was standing beneath the statue, looking like he was looking at the great dwarven master.

"Won't you go out? You know, there are some things in the Darkfort that you can't let you know. Diego became more and more arrogant, and he was completely a dead eunuch with a fox and a tiger.

"Even the King of Black Iron wouldn't dare treat us with such an attitude......" next to Rowgreen, a troll protested. This race is rare in Twilight's hammer.

"Huh?" Diego tilted his head and glanced at him disdainfully, "You can go and talk to the King of Black Iron about that, but now ......"

"Get out of here!" His words suddenly became stern, and he yelled unceremoniously.

"You're ......!" The Twilight cultist wanted to say something, but was stopped by Rogreen, and they walked silently to the other end of the corridor.

Diego flashed at the Night Elves. The latter took a few steps out of the corridor, looking at the Twilight Cultists with wariness, and made it clear that he didn't trust them.

Diego climbed up the statue's thighs, finally placing the heavy hammer of iron into the cast-iron statue's held left hand. Miraculously, when the hammer touched the statue, the statue's originally open left hand was suddenly clenched, and Diego could hear the sound of the metal inside the statue moving, and he had no doubt that the hammer was being held so tightly that if anyone tried to forcibly take the hammer, it would only be possible to break the entire statue, but in that case, the hammer of the iron guts would also self-destruct, a trap designed by Frank Ron Cast Iron during his lifetime.

At the base of the statue, a small drawer slowly popped out, and Diego saw the shiny silver key lying quietly at the bottom of the drawer.

He quickly pulled the key out of it, and just then, he heard the Night Elf shout.

"Stop, don't come closer."

He turned around and saw that the fire controller Rowgreen's gang was running towards him with anxious faces.

He pushed the drawer silently, watching it slowly shrink back into place like a light drive.

"You're taking what doesn't belong to you!" The Twilight cultists finally arrived, but they knew that what they had dreamed of had been attacked first.

"Joke, all the Yiqiē in this city belong to the King of Black Iron, how dare you disagree with this!" Diego leaned in and whispered viciously, he was so close to the other party that he could even see his own shadow in the Minotaur's eyes, and the spit from his mouth splashed the Minotaur in the face, "Don't think we don't know what you're up to in this place!" ”

"This is the will of Twilight's hammer, you will cause *** annoyance to the black iron dwarves!" Rogreen threatened, but the threat was no deterrent in the face of the two fakes.

"Don't bluff people with the Twilight's hammer, you are nothing in front of the King of Black Iron, scum!" The hunter coughed loudly, then spat out the slimy phlegm to the ground.

"You're insulting Twilight's glory!" Beside the fire controller, the troll's face flushed with rage, as if the sticky phlegm had been spat in his face.

"Really? What can you do with me? The hunter laughed arrogantly, looked at Rogreen mockingly, and spat out another mouthful of sticky phlegm defiantly.

"We'll protest to the Black Iron King!" The minotaur's eyes were red and he gasped. In fact, Rogreen knew very well in his heart that their plan had failed. Now, he couldn't think of any other way than to kill the two gladiators and retrieve the keys, but he also knew what it meant - the consequences of a complete fall with the Black Iron Dwarves were definitely not something he could afford. The Twilight Cult's collaboration with the Black Iron Dwarves was a decision between the two gods, and it was impossible for anyone to break it. Suddenly, the minotaur was caught in a dilemma.

"Go ahead." Diego didn't care, he turned and walked out of the corridor. He knew he couldn't tease it anymore, and it wasn't a joke to play with fire.

Behind them, the hands of the fire controller Rogrenn clenched and loosened, loosened and clenched, and finally watched them leave.

As he rounded the bend in the corridor and disappeared from the sight of the Twilight cultists, Diego almost collapsed in the corner, gasping for air, his performance almost draining his courage and brainpower. He turned his back to his arm and touched the back, which was cold and sweaty.

The two of them took a short break and hit the road again. Now that the biggest problem has been solved, all that remains is how to get back the information that has been kept by General Angfu and the puppet commander Agmanche.

They followed the same path they had come from back to the Hub Hall again. Along the way, the gladiator insignia provided them with a lot of convenience - although they had only won a gladiatorial battle, this glorious victory was enough to bring them some popularity.

This time they walked through the northernmost cave, which was the passage to the eastern barracks. Here they saw the great Secret Furnace Lock.

Surprisingly, there were no guards around the giant lock, not a single one. Perhaps in the eyes of the Black Iron Dwarves, this place is too close to the barracks, and no one dares to come to this place to brush the tiger's whiskers.

Diego stood on the high platform behind the giant lock and looked down. About ten meters below is the famous Black Iron Avenue. This main road of the city, which runs through almost the entire Dark Furnace City, is full of people and is very lively. The eastern and western barracks are located on the cliffs on both sides of the avenue, guarding this main artery. Hundreds of black iron guns were arranged on the edge of the cliff, and the muzzles of the black holes were pointed at the avenue, and the range covered almost the entire passage, leaving no dead ends. No one had ever dared to storm it by force, and it would be a disaster for the attackers.

Diego didn't look much and to be honest, now is not a good time to see the scenery. He walked back from the edge of the platform and took a closer look at the massive mechanical lock.

The lock looks like a giant gear, with a delicate flaming anvil pattern carved into the wheel face. It was the tribal emblem of the Black Iron Dwarves. Several thick chains and nooses were wrapped around the gear, crumbling tightly. Diego judged that the huge lock should be powered by some unnatural force, otherwise it would be difficult to explain how the tiny key could propel such a large mechanism.

He circled around the giant lock, eventually finding the place where the key was inserted on the side. It was a small console, and Diego inserted the key into the only keyhole on the console, and twisted it slightly—he didn't dare to push too hard to avoid breaking it.

To his surprise, there was no resistance to the twisting of the key, at least Diego didn't feel sluggish. After a few seconds, the cog-like lock began to turn slowly, but it didn't make a loud sound. It seems that the Black Iron Dwarven technicians have taken good care of it.

As the giant lock rotated faster and faster, after a buzzing sound, the gears that had released all the energy finally stopped turning.

"That's it?" Masrae said incredulously, looking around in disbelief, but nothing seemed to have happened, "I haven't seen anything yet." ”

"You'll see." Diego said nonchalantly. In fact, the giant lock was only the control part of the whole mechanism, and its main body, the drawbridge leading to the barracks, was still a few hundred meters away.