Everyone looked at the dark army outside the city with solemn faces, but the Black Stone Fortress was within reach, but they were not in a hurry to attack, which made Fang Yan puzzled, and after asking Li Taige, he learned that the dark army did not have independent thinking, and it had to be ordered by the dark heart.

The reason why the dark army outside the city did not attack was most likely because there was a large-scale war going on in other parts of the continent, and the heart of darkness focused all its attention on other battlefields, so it could only temporarily slow down the battlefield here.

After learning about this, Fang Fengbao said excitedly: "Then what are you waiting for? Hurry out of the city and kill as many of them as possible, and by the time the Heart of Darkness reacts, these 50,000 troops will already become ghosts under the sword!"

Fang Yan also had this intention, but Li Taige waved his hand again and again: "It's useless, the Heart of Darkness will give priority to more urgent matters, once we go out of the city and take the initiative to attack, the Heart of Darkness will immediately draw attention to manipulate the soldiers here to counterattack, doing so will only speed up our death." ”

Hearing this, Fang Yan hurriedly asked, "Then when is it estimated that the dark army outside the city will attack?"

Li Taige sighed: "Who can say clearly, it may be the next second, or it may be ten days later, it depends on when the heart of darkness focuses on this side." ”

After speaking, Li Taige's tone was a little desperate: "No matter when the Heart of Darkness pays attention to this side, it is only a matter of time before the Blackstone Fortress is breached. ”

Fang Yan said softly: "I don't think so!"

Hearing this, Li Taige was stunned: "What do you mean?"

A hint of confidence appeared on Fang Yan's face: "Since they are not in a hurry to attack, then it proves that we still have time, and we can be ready to resist." ”

"What kind of preparations can be made to resist the 50,000 dark army?" Li Taige expressed doubt.

Fang Yan's attitude was firm and confident: "I'll just ask you, do you dare to make a bet? Gather all the materials of the Blackstone Fortress and use all your strength to build a refining furnace for me as quickly as possible!"

"All the materials? I need to ask Thunder first. Li Taige was a little hesitant, after all, his official position was too low, and he couldn't do many things.

As a result, as soon as he finished speaking, a voice sounded: "No need to ask for instructions, I approve it!" Li Taige turned around and looked in the direction where the voice came from, and found that the person who spoke was Thunder!

Thunder looked at Fang Yan with solemn eyes, now that the army of dark species has been overwhelmed, it is only a matter of time before the Black Stone Fortress is broken, if this young man in front of him really has a way to block the attack of the dark army, let him give it a go, no matter whether he succeeds or fails, at least he has tried. Otherwise, when the city is broken, everything will be reduced to ashes, and no matter how much persistence and materials you see, it will become empty talk and have no value.

With Thunder's promise, Fang Yan no longer had the slightest delay, and immediately asked Li Taige to mobilize the people in the city and gather all the materials and resources in the Blackstone Fortress. Li Taige's efficiency was very fast, and it only took half an hour to pile up all the resources in the city like a hill in front of Fang Yan.

It may be that Fang Yan didn't say it clearly, or maybe Li Taige didn't have a clear concept of the word 'material resources', half of the resources piled up in front of Fang Yan were useless things, such as black powder, saltpeter, sulfur or something. These things might be useful to ordinary craftsmen, but they are worthless to Fang Yan.

Fang Yan hurriedly ordered everyone to pick out the useless things, and then classified the useful materials, and finally got a hundred fist-sized Black Thunder Stones, three hundred thumb-sized Frost Crystals, and a large number of various metal materials.

Since Fang Yan's speed of refining directly with fire was very slow, it was imperative to build a refining furnace. The furnace is not something that can be built just by thinking about it, not only the materials used are very special, but the process structure is also very complex. Fortunately, Fang Yan had always attached great importance to the structure of the refining furnace, and although he had never cast it by hand, he already had a clear blueprint in his mind.

Fang Yan asked the soldiers to carry the materials needed for the refining furnace in front of them, melt them one by one with the fire, and then shape them with their true qi empty-handed, creating the accessories needed for each part of the refining furnace. These parts are then integrated and installed together, and welded and smelted with demonic fire.

These procedures took Fang Yan half a day, the army of dark species could attack at any time, the time was pressing, Fang Yan kept letting people transport the materials to the side of the refining furnace, and according to various magic weapon casting methods, put the materials into the refining furnace one by one for smelting.

Due to the large number of dark armies, Fang Yan didn't have time to create too many kinds of magic weapons, so based on the materials he had at the moment, he selected a specific third-level magic weapon 'Zhenyuan Bead' to create them in a unified manner. Since only one type of magic weapon was needed, there was no need to change materials and processes, and everything was running like an assembly line, so it was very fast, and it only took one afternoon to create 100 Zhenyuan beads.

However, the demand for a hundred Zhenyuan Beads for the battlefield is simply a drop in the dime, so Fang Yan used those Black Thunder Stones and Frost Crystals to create three Black Thunder Bombs and two Frozen Ice Spirits, both of which were fourth-level magic weapons, and the time it took was the same as Fang Yan's time to create those 100 Zhenyuan Beads.

However, Fang Yan was sure that the power that these five magic weapons could exert was not comparable to those hundred Zhenyuan Beads. In order to maximize the power of these five magic weapons, Fang Yan also carved an inscription on them that could increase the power.

After everything was ready, seeing that the dark army still hadn't moved, Fang Yan simply took out the little bit of alien iron that had accumulated in his body with great difficulty.

Only the different iron the size of his thumb was precious, Fang Yan didn't want to waste the slightest, so he fused the remaining materials of the Blackstone Fortress, as well as the black rock element crystals and obsidian that Fang Yan had quenched in the Three Immortal Days of the First Secret Realm, into the different iron, and directly used the Demon Lin Evil Fire for fine forging.

Eventually, a fifth-level magic weapon appeared in Fang Yan's palm, looking like a triangular pyramid thorn, and once triggered, it would shoot into the enemy like a meteor, causing an explosion. However, although this was a fifth-level magic weapon, and it was mixed with different irons, because it was too rushed, and the fused materials were not so precious, Fang Yan felt that its power would definitely not be as powerful as the Black Yaozhu used to blow up the Saint Crystal Tiger.

At the beginning, two Black Yaozhu beads were made, one was used, and there was one left, and this last one was left by Fang Yan to the Heart of Darkness, and it would never be used unless it was absolutely necessary.

By the time Fang Yan had finished building the last magic weapon, the dark army that had been silent finally began to let out bursts of oozing howls. This deafening howl made every soldier in the Blackstone Fortress tremble, and they had lost their fighting spirit before the battle even began.

Lei Ting was also extremely nervous, when he saw the magic weapon created by Fang Yan, he was a little surprised and a little disappointed, he casually picked up a Zhenyuan bead, pinched it in his hand, looked at it for a while, and said in despair: "You have spent so much time and wasted so many materials, and you only came up with such a gadget? ”

Fang Yan snatched Zhen Yuanzhu back, for fear that the thunder would be triggered by accident and kill all the people on the wall.

The corners of Fang Yan's mouth rose slightly, and he said confidently: "Sometimes, being big doesn't mean that the power is also great, just wait and see!"

Fang Yan distributed a hundred Zhenyuan beads to the hundred soldiers on the wall, and divided these soldiers into one, two, and three teams.

At the same time, Fang Yan gave three black thunder bombs to Lin Feng, Fang Fengbao, and Feng Yu, and then gave Senior Sister Hu a frozen ice spirit, and took one in his own hand.

Senior Sister Hu and the others knew Fang Yan's attainments in refining weapons, and they didn't have the slightest doubt about Fang Yan, while those soldiers who had not touched magic weapons looked down at the small round ball the size of a chestnut in their hands, but they looked very unconfident. But at this moment, the situation is critical, but they do not allow the slightest doubt.

"Woo woo woo woo ......" With a deafening roar, the endless army of darkness finally attacked.

Just when Thunder wanted to give the order to defend, Fang Yan hurriedly raised his hand to stop him, and said in a low voice: "It's not the time yet, wait a minute!"

Thunder looked at Fang Yan with complicated eyes: "If you don't prepare now, when they attack in front of you, there will be no chance to fight back." ”

Fang Yan's eyes were firm: "Don't worry, I know what I'm doing!"

When the dark army was less than fifty meters away from the city wall, Fang Yan shouted: "First team, throw!"

With Fang Yan's order, the thirty soldiers of the first team threw out the Zhenyuan Bead in their hands at the same time, and the thirty Zhenyuan Beads drew thirty perfect arcs in the air and landed in front of the dark army, and in an instant, thirty huge energy balls burst out from the Zhenyuan Bead, each of these energy balls had a diameter of ten meters, and were composed of pure energy, forming a huge shock wave, and all the dark species hit by the shock wave would be shocked to death in an instant.

The first wave of Zhenyuan Beads directly took the lives of nearly a thousand dark species.

But the dark species that were not afraid of death did not stop attacking, and still pounced on it like a tide, and when the subsequent dark species took over the position of the dead dark species, Fang Yan shouted in a low voice: "Second team, throw!"

In an instant, another thirty Zhenyuan beads flew out, killing more than a thousand dark species again.

Seeing that more than two thousand dark species were blown up in an instant, the soldiers who were still lacking in confidence just now instantly became excited, their eyes lit up, and they stared at Fang Yan deadly. And Thunder finally realized the power of these little things, and his eyes changed and changed when he looked at Fang Yan.

When the third team's Zhenyuan Bead was thrown, it once again killed a thousand dark species.

"Hahaha, it's too strong, I didn't expect these little things to be so powerful, it's just a war machine!"

"If you want me to say, these little things are not worth mentioning at all, the powerful one is the person who made them, if we had the help of that person earlier, we wouldn't have to be killed and injured so badly, I'm afraid we would have blown up the dark species back to my grandmother's house a long time ago!"

"I thought we were going to die, but is this called a desperate life?"

Fang Yan's ears sounded with fierce discussions, everyone's faces flushed with excitement, and their hands danced, although they were all veterans who had experienced the test of blood and fire, they still couldn't hide the joy in their hearts when they escaped death. And they all know very well in their hearts that all this is due to the young man in front of them.

However, Fang Yan didn't have time to be happy, because the dark army was still pouring in.

When the dark army approached the city wall again, Fang Yan shouted without hesitation: "Black Thunder Bomb, throw!"

With Fang Yan's order, three black thunder bombs came out of their hands, and the moment they reached the ground, three huge black thunder balls appeared on the battlefield in an instant. These thunderballs did not disappear as soon as they appeared, like Zhen Yuan Zhu, but stayed on the battlefield for more than ten minutes.

Three black thunder balls with a diameter of more than twenty meters are like three impenetrable barriers, firmly protecting the city wall, and any dark species that comes into contact with them will be burned into powder by the black thunder in an instant. At the same time, a large number of black lightning bolts are emitted from the black thunderball, which wander around the battlefield irregularly, and once they come into contact with the dark species, they will directly penetrate it.

One hundred Zhenyuan Beads only killed 3,000 dark species, and the mere three black thunder bombs not only killed more than 5,000 dark species, but also made the dark army blocked from the outside and unable to get close to the city wall for half a step. But the Black Thunderball will eventually disappear, and at the moment of disappearance, the dark army will make a comeback again.

And Fang Yan silently took out the last magic weapon, the Arrow of Death!

When Fang Yan infused the aura into it, the Arrow of Death was immediately sensed, and it trembled slightly, and as Fang Yan's mind moved, the Arrow of Death flew violently into the sky, disappearing in an instant. Just when everyone was confused, they saw a black light arrow with a length of 100 meters and a diameter of five or six meters falling from the sky.