After reading the contents of all the dialog boxes that popped up in front of him, Yifei found that after the fortress was upgraded to two stars, there were only 2 benefits that he could immediately see the actual effect.

One is the improvement of personal strength. From the previous saint-level combat power to the current king-level peak. As for how much he has improved, after sorting out the information that the system has instilled into his brain, he immediately knows that now with his strength, he can basically run rampant and domineering in the Western Continent.

Hahaha, super god-level combat power! At this time, Yifei remembered the first time he met Yiyi in the Khajid Mountains, and heard people talk about his glorious past, and he drank the retreat of ten thousand armies. Suddenly, Yifei became a little proud, with his current strength, he can finally go out and pretend to be 13 openly, and he doesn't have to worry about any danger!

Thinking of this, he was very proud, and immediately went to check another benefit that could be effective immediately, that is, the so-called three-star civilization product energy guardian, he wanted to know if the effect of that thing was strong.

Energy Guardian: The City Guardian Array produced in the Age of Magical Energy, with its sufficient energy, can resist any attack below the three-star civilization!

Protectorate! Looking at the introduction of the energy guardian, Yifei immediately thought of where to place it. Of course, this kind of weapon for guarding the house must be placed in the Wild Wolf City, which is inland but has a precious fortress!

As for Chang'an City, he was still more assured, after all, it was suspended on the sea, the geographical location was more superior, and the sea was guarded by a fleet, and the sky was guarded by those sky monsters of the Iron Cliff tribe and a large number of air horses, compared to Wolf City, its safety factor was not known how many times more.

After appreciating the benefits of two that can be seen immediately. He opened the interface of the system and wanted to see what it would be like to enter the Iron Age. What's new in the system interface!

As the system interface opens, at first glance. He found that the things in the system interface were still the same as before, and there was no essential difference. But as one column after another opened, he found that a new building had appeared in each of the town buildings and the military buildings!

Inscriptions of Steel: Town buildings, wonders, and discoveries and advances of all the major civilizations of the Iron Age. The number of buildables is 1, and the city prestige is +1000.

Steel R&D Academy: A military building that can be used for research and development of various types of steel!

After reading the introduction of the newly added buildings in the system interface, he noticed that a small spherical symbol was added to the minimap on the left side of the system interface. Somewhat curious. Hit the small sphere directly, and a virtual box pops up in front of you.

Kowloon Spatial Topographic Map!

Looking at the line of words displayed at the top of the virtual box, he immediately knew that the ball was used to view the map of the Nine Dragons Space that he had just obtained, so he opened it, and the map of the Nine Dragons Space came into his eyes, and a brief introduction also appeared in front of his eyes.

The spatial area of Kowloon is 3.28 million square kilometers on land and 1.36 million square kilometers on the ocean. Among them, the plain terrain accounts for 78% of the land area, and the mountainous area is rich in antimony ore.

After reading the brief that popped up in front of him, Yifei suddenly found out. This Kowloon space is simply a very good base camp, and with the size of its land, it can completely allow hundreds of millions of people to live in it. In particular, there is also an abundance of antimony ore here, which is simply a treasure land!

Come to think of it. He placed the newly acquired fortress in the Nine Dragons space, and also set the function of the Jade Rabbit Guardian Statue that towered outside the wild plateau, so that it could only protect those who were loyal to him.

Now that the tripartite agreement has been nullified. He didn't mind taking the Wild Plateau and making it a hidden base. It can also be regarded as leaving a way back for yourself.

What's more, this space is not only fertile land, but also rich in such an important strategic resource!

Now he didn't know what role antimony ore could play in the Iron Age. But he knew very well that once he had raised the kingdom to the fourth level and entered the age of technology, the use of antimony ore would be revealed.

As the fortress replaced the previous black castle, rows of city walls rose from the ground, coiling layer by layer on the mountain, and from a distance, the whole mountain was like a kind of nine-story pagoda, with clear layers. Immediately after that, various town buildings rose from the ground, and a large number of residents poured out of the fortress and entered the houses and town buildings everywhere, and an hour later, a huge city appeared on the map.

Seeing this scene, he pointed to the open space on the top of the mountain and said, Build the Inscription of Steel! A dialog box popped up in front of his eyes.

[Scrivener: The Inscription of Steel, a two-star civilization wonder building, it took 60 days to build this building, is it built, is it true?] Not? 】

Be! Looking at the prompts given by the system, he chose yes in his heart! Immediately a large crowd of people appeared in the clearing of the mountain, and they were busy there.

Seeing this scene, he once again chose a vacant land and built the Iron and Steel Research and Development Institute.

Looking at the steel research and development college that appeared on the map instantly, he clicked directly into it, and immediately a virtual box was displayed in front of his eyes, and he immediately knew what the steel research and development college was for.

R&D of ordinary steel.

R&D of ordinary steel: R&D of strength, hardness, density, corrosion resistance, .......

R&D of high-quality steel: R&D of strength, hardness, density, corrosion resistance, .......

Special steel research and development.

High-quality carbon steel: strength research and development, hardness research and development, density research and development, corrosion resistance research and development, .......

Alloy steel: Same as above.

High-alloy steel: Same as above.

At this time, Yifei found that the Iron and Steel R&D Institute was a pure place to study all kinds of steel, and after understanding the role of the Iron and Steel R&D College, he couldn't help but have a bad conjecture in his heart, could it be that the steel age mentioned by the system was different from the steel age he thought.

According to his idea, the application of steel in large quantities should be the arrival of the industrial era. The advent of the industrial era indicates that he can enter the era of hot weapons from the era of cold weapons.

If he really entered the era of hot weapons, it would be easy to think of conquering this world. However, the functions displayed in this new building made him feel a big disappointment, all of which were all steel research and development technology, which really deserved to be called the steel research and development college, and there was only one place to study steel.

Just as he was complaining in his heart, a dialog box popped up in front of his eyes.

[Clerk: Your Majesty, in the era of industrialization, heavy industry was the most important criterion for measuring the strength of a country, and steel was the foundation and pillar of almost all heavy industries, and it was also a necessary material for construction, so it ......]

System, I understand what you said, I just want to know, how to step from the era of cold weapons to the era of hot weapons! Looking at the explanation given by the system in front of him, Yifei asked directly in his heart.

Immediately, a large amount of information poured into his mind, and after sorting out all the information in his mind, Yifei found that the era of hot weapons defined by the system was completely different from what he remembered.

According to the definition given by the system, as long as he upgrades the fortress to 4 stars, that is, he enters the age of science and technology or the age of biology, he has officially entered the era of hot weapons.

And before 4 stars, it was all laying the foundation! When 2 stars are in the age of steel, the focus is on the research and development of various materials, mainly steel; At the time of Samsung, that is, the era of magic energy, the focus was on the research and development of various energy sources, among which pollution-free magic energy was the mainstay; When waiting for four stars, the achievements of the previous three eras can be combined and officially enter the stage of comprehensive application.

After understanding what was going on, he suddenly realized that after entering the Iron Age, he might have more advanced steel technology than the world in his previous life, but he could only make the steel armor of the soldiers under his command stronger and the weapons sharper.

Violent creatures! Thinking of this, he couldn't help but sigh in his heart!

But the result of the matter is already like this, and he can only bear it very aggrieved, hey, with such a high-end steel process in his hands, he can only watch, this kind of thing is aggrieved by anyone!

(To be continued.) )

PS: It's so depressing.,There's a lot of things to do today.,So busy that I didn't log in to the background.,Just logged in to the background.,I found that the automatic setting hasn't been sent yet.,When I'm feeling strange.,I found that the setting was 05-18.,Fainted! Sorry friends!!