On the side of Gubei City, Chu Cheng took out the city drawings he prepared and decided to build a fortress. The width of the fortress is about thirty miles and the depth is more than twenty miles.

This is the core of the fortress. If you look outward, you can cooperate with Li Aotian's technology to create layers of metal fortresses.

Whether in terms of technology or materials, these are not too expensive, but transportation is the only space for Chucheng to transport materials on a large scale is his magical book of divine skins. However, when thrown into the magical book of divine skins, anything will be immediately polluted and distorted.

Other spaces are limited, so many of the material transportation this time are carried from semi-plane and transported in ordinary materials, while materials with slightly higher grades can only be transported by air.

This makes the war much higher. The cheapest thing is sea transportation, a large number of transport ships transport high-end materials in non-opened spaces and ordinary materials in open spaces.

The Sanchong Gate set up the line of Chucheng, and in the name of Mira, there were also troops and warships. They wanted to build a city next to Gubei City, more than fifty miles apart.

A purely fortress-type city, not for other purposes.

Chu Cheng and Li Aotian both thought it was too expensive, so they simply negotiated with the people from the Sanchong Sect to let them restless. The next step was that the two princes planned to march eastward and seize a pass. The terrain of this pass was relatively wide, and the mountains had two broken places to pass. This location was suitable for blocking enemies moving westward from the east.

Similarly, it is also a must-pass place for advancing eastward, otherwise you have to poke forward and approach two thousand miles before you can continue to go east.

Mira simply sent her clone to preside over the situation here herself. The army of Sanchong Gate was harassing the coastal areas, and the losses were not small. Now Sanchong Gate also wants to build a factory here and is willing to invest.

Li Aotian was very welcome and signed a mutual investment agreement with Sanchongmen.

That is, capital exchange. Although it is not a technology exchange, the Sanchong Gate can purchase a certain proportion of weapons from the factories of Chucheng and Li Aotian.

The triple gate will also produce weapons and ammunition here. When the two parties sign a contract, the standards and prices of ammunition are particularly unified.

The battle continues, with more and more reinforcements. The resources transported from the Four Gods Island in Chucheng are not too many. The foundation and the steel fortresses are built for the time being. The reason why the star map is saved is that now is the most dangerous time, and the stage of building a city, if the enemy attacks in large quantities, they must have strong enough force to protect it.

If there were no ninety-eight star maps waiting in the deep space, Chu Cheng and Li Aotian would not dare to really build a city.

The battle on Chucheng became fierce, and the battle on the Principality of Maggie was also driven.

The coalition forces of the three continents, mainly royal legions, led the nobles of all sizes to send troops, with the goal of capturing the entire territory of the Principal of Maggie. There are natural environments around the Principal of Maggie, and it is still not easy to fight out, but the action on Chucheng was too fierce. Observing the star map and the three royal families on the top of the mountains all had the power to mobilize some resources.

Can't command, but you can see the stored images.

After the battle of Gubei City, everyone saw Chu Cheng and Li Aotian preparing to expand and transport a large amount of resources, which was unbearable. If the authority on the top of the mountains was to be improved and stable, they had to find opportunities in the gods.

Killing four temples at once, no matter how small it is, can increase the opponent's authority.

In September of the eighth year of Xilu, the foundation of Gubei City Fortress was completed. One-third of the materials transported from Xilu and Sun Continent were in place. Since the underground construction of the core of the fortress, the core was no longer an artificial volcano. Making artificial volcanoes on the coast was due to the lack of water in the brain.

The underground energy facilities at the core of the fortress are this time Taoist technology, with four large arrays cycling endlessly to provide energy.

The earth, water, wind and fire array can be built on it, which serves as the energy core of the fortress.

The diameter of the base of the giant tower is 1.2 kilometers, and the underground area is even larger. Around the underground area is the core of each factory. This tower will be led by the second soul of Shenluo City to ensure safety. Unless the enemy dispatches the ninth level, the eighth level power cannot destroy it.

Chu Cheng and Li Aotian were both in the factory at this time and were personally deploying production lines.

Here, the first metal angel will be born. A mass-produced model dedicated to ground attacks. Metal angels have lower energy requirements and can be used in any crystal.

Li Aotian also came up with his real technology, active metal.

It is really active, as if it is alive, can transform, be tougher, and can easily enchant.

However, this kind of material can only be used in the core and needs to be transported from mainland China, and cannot be produced locally. Chu Cheng didn't ask why, this is Li Aotian's secret.

Active metals, biochemical flesh, biological bones, metal armor, metal wings.

A flying squad is a fifth-level plague angel with five metal angels. Three squads form a flight squadron. Five flight squadrons are a large formation.

Then it is how to allocate. Chucheng means that a legion is equipped with three large formations.

Li Aotian felt that it was too much and he couldn't afford it.

Chucheng means the usage of three large formations in each legion, one is to prepare for war, one rest, and one is to maintain it in the factory.

Chu Cheng said to Li Aotian: "A legion has only two hundred and seventy angels. Do you think there are many?"

"New metal angel, enough firepower."

"With our technology, the number of puppets will increase further. If the puppets are large enough, just like armored vehicles, what should we do? Should we use a star map to bombard it? Or will we fight with the biochemical troops?"

"Okay, okay, you have the final say." Li Aotian was as good as the stream of good deeds.

"I'm not sure..."

"Your Highness, report urgently in front of you!" A soldier was brought over to report to Li Aotian.

"speak."

"The information sent from the western defense line is that the Miya Empire is forming a large army, with a scale of at least ten legions upwards. Moreover, the temples in various temples of the Miya Empire are organizing knights and heading towards our direction."

Chu Cheng and Li Aotian talked about war on paper. After talking for a long time, the metal angel was not in place yet, and the enemy came first.

Both of them laughed, and Li Aotian said: "Old Chu, can the star map be increased?"

"It can't be increased for the time being. I think we have to be careful with our two lairs."

Not to mention the extra star map, Chu Cheng left even the only three-grooved star map in the crown of Thorns. Everyone wants the power on the top of the mountains. It is normal to take action for this power.

Chucheng is not short of resources, he lacks time.

In addition to the 100 Beidou Star Map given to him and Li Aotian by the emperor, the Thorn Crown has now launched 360 sets and Shenluo City has launched 120 sets.

The Beidou Star Map is a combat cluster with three star maps. There are always forty Beidou combat clusters above the Thorn Crown.

The same is true for Shenluo City. Now the biological crystals produced by Shenluo City can be self-sufficient and have begun to make strategic reserves. They must be properly protected, and no one dares to say that Shenluo City will not be attacked.

Even though the relationship between Chu Cheng and the Sanchong Gate has eased and they have fought together.

This month, forty combat clusters were also arranged on the Shenluo Fortress. The remaining forty combat clusters and 120 star maps were allocated on the Ashes Continent.

The Ashes Continent is also very important. The corpses of those monsters are the best food for the demon eyes.

It’s not that it cannot be replaced, but that from the perspective of growth, monsters are the best food.

Another one is that the Crown of Thorns is still equipped with a second-level magic eye system. The so-called second-level magic eye refers to a magic eye specially used for reconnaissance. It has melee ability and lacks long-range ground strike capabilities, and only floats in a 500-mile-high area.

They are all Beidou Demon Eyes. Chucheng's Demon Eye system is a battle between 10,000 and 20,000 miles, so there is no need to lower the height.

However, many of the Beidou Demon Eyes controlled by other companies must be reduced to a height below 500 miles.

In this way, it is actually easy to be attacked by enemies.

The second-level magic eyes of the Thorn Crown are actually designed to escort the Beidou magic eyes of other forces. When needed, these second-level magic eyes will rush to the combat area and fight against the enemy in close proximity.

Next is Li Aotian's magic eye system, which is not that high, and is in the area that goes downwards and upwards of 500 miles.

Chu Cheng didn't want to waste his energy, so he asked Li Aotian to cancel his magic eye system.

However, when he found that Li Aotian's magic eye was easy to launch and could be recycled and used at a cheap price, Chu Cheng gave up the idea. With the technology provided by the Three Gate, Li Aotian's magic eye system has stronger survivability. With the second-level magic eye protection, the use value is still good.

On Chucheng, a lot of productivity has been delayed by the Demon Eye system, so the growth of ground troops is now slow.

The star chart cannot increase rapidly, so there is some trouble in front of you.

Chu Cheng said, "There are ninety-eight star maps, which are almost enough. The enemy may not be very powerful. If it really doesn't work, we will go on stage in person."

"I won't go if a gentleman does not stand under a dangerous wall!" Li Aotian shook his head.

"Don't you have a metal titan?"

"Forget it, alas..." Li Aotian quickly issued an order, and arranged defense lines in the direction of the Miya Empire's march, and joined the Metal Titan. Chu Cheng also mobilized the Plague Legion to go over to try to delay the enemy's offensive.

Unlike the world of technology, the attack of the Miya Empire is coming in full force, but it will arrive very late.

The metal titans move slowly, and in non-combat mode, they move slowly on the ground. Fortunately, the army of the Miya Empire is also moving, and the distance is even further apart.

Three metal titans have set out, and the production of Gubei City has officially begun.
Chapter completed!