The military fortress was built between two mountains to the north of the city of no return, and was the only passage to the extreme north and the central part of the land.

The fortress is built by a mixture of huge rocks and steel, like a steel giant beast lurking on the ground, more than 100 meters high, more than 600 meters long, directly extending to the interior of the mountain on both sides, more than 400 meters wide, built thousands of rooms, there are training areas, living areas, storage areas, entertainment areas, can meet all the needs of life and combat.

A few hours later, Chen Xiaoyi was taken to the fortress.

He thought about it, and would rather be an intelligence recorder than Luo Qingwen's cook. This Nizi is perceptive and suspicious, maybe a negligence, her secret was discovered by her.

"Escort Chen, what do you think of the current armament?"

When Cao Song heard that Chen Xiaoyi was coming, he was overjoyed, and immediately asked people to clear out an office and a top-level living room, put down all his affairs, and took him to inspect the fortress.

The two of them walked on the top of the fortress, and every five to ten meters, there was a large-caliber sky-shaking cannon, three times the size of the one that had damaged Zhang Yunjuan, and each cannon was guarded by two soldiers, and a large number of black cannonballs were piled up next to it.

"This is a strengthened version of the second-class sky-shaking artillery, with eighty on top of the entire fortress, and an effective firing range of up to one thousand meters. In the middle of the fortress there are also one hundred and twenty ordinary first-class guns and five third-class guns. And the fortress leads directly to the mountains on both sides, and the inside extends in all directions, and ambushes can be laid everywhere, directly forming a semicircular outflanking of the dark clan besieging the city. ”

Cao Song excitedly introduced and said: "The original designer of this fortress is of a very high level, only a second-level scale, but the defense capability can be comparable to the third-level level, the premise is that the equipment and materials must be sufficient, and the combatants must be sufficient." ”

He pointed to the small transport trucks coming and going in the fortress and said: "Some of these materials are not returned to the old bottom of the city warehouse, and some of them are 'donated' by officers and material dealers, and now they are being sent to various gates in different categories. ”

Chen Xiaoyi wanted to come to the telescope, and looked at the direction of the extreme north of the fortress for a while, in the wasteland a few kilometers away, a large number of demon creatures were densely gathered, although they were all low-level, but the number was terrifying, at a glance, they were all dense phobia, I am afraid that there are more than 100,000.

Cao Song said with a gloomy face: "After these things retreated, they have been lying there quietly, afraid that they will have to wait for the night to attack." But this fortress is now impregnable, and if there are only these low-level things in front of you, no matter how much it comes, it will only consume ammunition. ”

Chen Xiaoyi advised: "Don't be careless, how long can the materials be supported now?"

Cao Song said: "It's hard to say, it depends on the degree of the enemy's attack, and all the materials have not been counted. The brigadier has already sent a request for help to Qingyang City, and we only need to support it for about fifteen days, and the support will be there. ”

After speaking, he took Chen Xiaoyi to the bottom of the fortress, a huge open space, where more than a dozen wheeled armored combat vehicles were placed, which had been dusted for more than ten years and were now undergoing maintenance and maintenance.

At the forefront, there was a small silver-gray chariot, which looked very new, with a powerful direct-fire barrel on it, and a very long range, and the chariot was engraved with the family coat of arms of the Zhang family and the flag of the empire.

"The 'Torrent' series of light combat vehicles manufactured by Imperial Heavy Industries belongs to the fifth-level large equipment, and it is the most powerful one here, hehe, guess where it came from?"

Cao Song showed a stunned expression.

Chen Xiaoyi said three words: "Zhang Wangxi." ”

Cao Song was stunned for a moment, then smiled bitterly: "I still want to test the IQ of Escort Chen, it's really humiliating." The kid was taken away from all the space equipment, there were more than twenty of them, and he was crying dimly, and the sword of the brigadier was cut and bleeding from his neck, and he still didn't give up. ”

Chen Xiaoyi felt that his hands were cold, and he thought that if Zhang Wangxi knew that this was his idea, he was afraid that those hundreds of bullets would greet him.

"Escort Chen, there is one more thing. ”

Cao Song said suddenly: "Among these demon creatures, there is a kind of demon monkey with a slightly higher spiritual intelligence, and when attacking the city, these demon monkeys are all hiding behind. When the siege was over, they rushed up and dragged away the corpses of the demon creatures in large numbers. ”

"Sure enough, it was said by Guard Chen again, they need the corpses of demon creatures, but it seems that there is a selection, not all corpses do, I don't know what they are going to do?" he looked at Chen Xiaoyi's eyes full of admiration.

Chen Xiaoyi was shocked, could it be that the ceremony was not over yet?

He knew that those demon apes were picking out corpses that could produce evil elements, and he was afraid that Momo or other dark descendants would continue the ritual.

He said in a deep voice: "Next time this happens, continue to attack the demon ape, and don't let them take the corpse away." ”

"Yes. ”

Cao Song didn't know why, but since Chen Xiaoyi said it, he would definitely implement it firmly.

Chen Xiaoyi followed Cao Song to take a tour of the fortress, and felt that as long as there were no accidents, it should not be a big problem to hold for fifteen days, even if the other party had a few powerhouses in the hegemonic realm, it was impossible to forcibly break it.

Soon it was time for dinner, and Cao Song immediately prepared it and invited Chen Xiaoyi to dine together.

Chen Xiaoyi's face darkened, and he said: "At the moment of the great enemy, how can I still have the heart to eat! I swear that I will not eat food again until I retreat from the enemy!"

After saying that, he left alone.

Cao Song, who was left with a shocked face, gave two thumbs up, his face was full of admiration, "This is the real soldier's backbone, the pillar of the empire!"

Chen Xiaoyi returned to his bedroom, although it was not as luxurious as the villa by the small lake, it was also extremely neat and comfortable.

He inspected the room, then messed up the quilt and sheets, threw them on the side of the bed, and began to sit cross-legged on them to cultivate.

There is nothing wrong with the defensive line, so you don't have to worry too much, and it is the right thing to seize the time to improve your strength.

After meditating for a while, he began to take the dark elixir again, absorbing a trace of the dark force inside. After a few hours, the dark force in the body became stronger and stronger, and although it was completely purified by the divine mandate each time, it seemed that a kind of anxious negative energy was deposited.

This situation was also described in Zhang Anling's notes, but Chen Xiaoyi appeared for the first time.

"It's strange, it's not just negative emotions, this dark force seems to have become a little irritable, is there something wrong with me, or is the elixir not pure enough?"

Chen Xiaoyi practiced for a while, stopped, and observed the changes in emotions and force in his body.

He then swallowed another Black Spirit Pill and couldn't help frowning when he found that he still had the same problem.

"Zhang Anling was in this situation when he was in the Peerless Realm Quadruple, and the dark force he swallowed was many times that of mine, so I have a negative impact now, so it will come too quickly, right?"

Chen Xiaoyi was puzzled, he got up from the bed, walked to the window, and looked out.

The faint negativity, as if it was affected by some kind of influence, it was pitch black outside the window, there was no light, and the sky was like thick ink.

Chen Xiaoyi deliberately left a trace of the dark force in his body, not all of which were purified, he sensed this trace of dark force, and found that it was indeed affected by the window.

"It's just night, how can it affect the Force?"

He pondered for a while, looked out the window from time to time, and suddenly his face changed slightly, and he muttered, "Could it be...... Not really......"

He hurried out of the room and ran straight to the fortress's watch stand.

There were two soldiers in the monitoring station, who were taking turns to monitor the movements of the demon creatures with telescopes, and one of them suddenly shouted: "Oh no, those monsters seem to be rioting! Quick, go and inform Captain Cao." ”

The other man sped to report.

Chen Xiaoyi entered the monitoring platform on his hind feet, directly picked up a telescope on the table, and looked to the north, those demon creatures lying dormant on the ground began to be irritable one by one, digging the ground with their claws from time to time, shaking their bodies, and letting out a low roar.

He frowned, his face very ugly.

"Who are you?" the soldier inside spotted him and immediately shouted, "This is the monitoring station, no one is allowed to enter!"

Chen Xiaoyi didn't pay attention to it, but turned a high-level telescope in the monitoring station, and the visual range was four or five times that of the ordinary.

He pointed the telescope directly at the sky and turned it slowly, as if looking for something.

"Did you hear what I said?!"

The soldier was furious, and when he saw the inferior soldier epaulette on Chen Xiaoyi's shoulder, he rushed forward and was about to grab the telescope, when Cao Song came in and shouted, "Stop!"

Cao Song has been inspecting the defense line, for fear that the demon creatures will raid in the dark, and he heard the low roar of those demon creatures from a distance, and he was rushing to the monitoring station to check in detail, and he met the soldiers who reported.

"Escort Chen, what's wrong?"

Cao Song was surprised and delighted when he saw that Chen Xiaoyi was also there, and at the same time realized that the problem might not be simple.

Chen Xiaoyi's body suddenly trembled, and he froze there, his face full of shock and sluggishness.

"What's wrong?" Cao Song asked again, seeing that the direction of the telescope was not the area where the demon creature was, but a piece of sky on the left, and he couldn't see anything except pitch black.

"How can this be, it turns out that they are not waiting for the night, but ......"

Chen Xiaoyi muttered to himself, there was still a trace of anxiety on his face, he stared at the telescope a few more times, and after confirming that it was correct, he immediately said in a deep voice: "Go and inform the prospective school, everyone is ready for the first level of preparation!"

Cao Song was taken aback, and immediately the adjutant next to him shouted: "Don't go quickly!"

Then he leaned himself up to the telescope and looked at the sky, and in the extreme blackness, there seemed to be a little purple light, forming a small dot.

Cao Song's pupils shrank, and he suddenly thought of something, and shouted in a lost voice: "Black Moon?!"

Chen Xiaoyi's face was unprecedentedly solemn, and he nodded: "It's Black Moon." ”

Cao Song was shocked and couldn't come back to his senses.

On the near-orbit of each continent, there will be a large amount of rubble around, and some of the gravel will move on a predetermined trajectory, and it will be separated from the ancient Yao forever, and the dark force will be condensed.

These rubbles will attract each other to each other due to the Dark Force, and slowly form a huge celestial body, the Black Moon.

Whenever the Black Moon appears above the earth, the dark force on the ground will be extremely strong, and the power of all dark creatures will explode.

Chen Xiaoyi stared in the direction of the north and said coldly: "I thought they were just waiting for the night, but I didn't expect it to be the black moon." ”

Momo's immature face appeared in his mind, and he secretly said in his heart: "Are you the one who directs everything behind this?"