Regarding the origin of this steel city, in fact, even if Baba Ta didn't explain it, Lin Feng knew it, and it was described in the original book.

More than 50,000 years ago, the earth was originally a pastoral planet of the Silver Blue Empire, which housed some precious monsters, which were quite popular in the surrounding cosmic empires, and relatively important.

And Mars is a mining base built on the earth, but in order to hide himself, Huyanbo directly destroyed the fleet between the earth and Mars with one move, so that all the miners on Mars ran out of ammunition and died.

Not only that, in order to prevent people from being invaded again, he also used secret methods to cover the cosmic coordinates of the entire solar system and even some surrounding spaces, completely sealing it down.

In this way, the solar system completely disappeared from the star map of the Silver Blue Empire and even the Black Dragon Mountain Empire.

After all, the entire Black Dragon Mountain Empire is no more powerful than the strength of the domain lord and the realm lord, and it is impossible to break through the spatial blockade of an immortal feudal lord.

This is also the real reason why the earth has never been explored by cosmic people.

"Master, the nine pyramids in front of you are actually built by the Terrans to imitate the primary method of obtaining energy from the mechanical race, in other words, it is a kind of energy tower, which can supply the energy of the entire steel city." Babata continued.

Lin Feng didn't care about these energy towers, because that level of energy, he didn't care about it at all.

If it's a real mechanical energy tower, maybe it can make him a little excited.

After all, the Cyborgs are indeed very strong in technology, even far surpassing the Terrans.

The reason why the virtual universe network, which can be connected anywhere in the universe, was able to be successfully constructed was due to the fact that the mechanical family also contributed a lot.

"Babata, explore the metals and metal ores directly, and transmit the distribution map to me." The reason why Lin Feng came to Mars was because of the rare metals on Mars.

"Master, the metal ore on Mars has been mined. The rare metals extracted are all hidden in the steel city, and this rare metal is translated into Chinese, which is Xuantie......"

Babata's intelligence is quite high, although the Meteorite Star has been included in the Divine Jade Space, but with Lin Feng's permissions open, he can also use the equipment above to conduct all-round exploration of Mars.

And as he finished speaking, a steel city layout map was transmitted to Lin Feng's sea of knowledge.

"Very good...... A large amount of dark iron, a small amount of dark iron essence, and a very small amount of dark iron mother, sure enough! ”

Lin Feng immediately received the distribution information of the rare metals, and combined with the images of his divine sense, he immediately knew it clearly.

Immediately, he moved and entered the massive steel city that had ceased to operate beneath the nine pyramids.

Dark Iron, Dark Iron Essence, and even Dark Iron Mother are all quite ordinary rare metals, but for the Golden Horn Behemoth at this stage, it is an extremely suitable supplement.

After all, even if there really were extremely rare metals now, I am afraid that the Golden Horn Behemoth would not have the ability to devour it at all. Because the rarer the metal, the tougher it tends to be, and it is difficult to digest.

It's like the red mixed copper mother cast into the Meteorite Asterisk, which is a very rare metal, if converted to the level given by the Divine Jade, it is definitely a B-level rare item, and it can be used to cast the Acquired Spirit Treasure.

And how could a rare metal of that level, which is now only at the peak of the planet, be able to digest it?

As the saying goes, you can't get fat by eating in one bite, that's the truth.

Half an hour later, after Lin Feng's autumn wind swept away like falling leaves, all the rare metals in the steel city were all in his pocket.

"Whew! There are 16,000 tons of dark iron essence and 2,000 tons of dark iron mother, and the amount of dark iron is too large, only 100 million tons can be used...... These are enough for the Golden Horn Behemoth to break through to the stellar (foundation) level. ”

Lin Feng shook his head, he was not Luo Feng in the original book, he was so poor that he even moved the entire steel city.

He didn't want these rare metals for money, but for the growth of the golden-horned behemoth.

Lin Feng could actually use Babata's equipment to access the virtual universe network, and then buy some metal online.

But if you want to let someone from the virtual universe company deliver the goods, you must give the address, and in that case, the earth will be exposed to the eyes of the major forces in the universe again.

But for some reason, he didn't want to expose the earth for the time being, so he could only come to Mars and use these things to "pad his stomach" first.

After searching for rare metals, Lin Feng no longer had any nostalgia, and his figure disappeared again on this fiery giant planet.

Ten minutes later, the Earth was above the sky.

Lin Feng stood in space, looking at the huge aqua-blue planet below, a special light flashed in his eyes.

"This sparkling planet is so beautiful......

Before, he set off directly with his back to the earth, so he didn't notice it at all, but now facing the earth and returning, he was shocked by this scene.

The huge blue planet, silently orbiting in the dark universe, exudes an intoxicating infinite vitality......

So beautiful! It's so beautiful that I can't describe it in words!

Although Lin Feng had also seen this identical blue planet on TV screens when he was in the primordial time and space, but at this moment, seeing it with his own eyes, the shocking effect was really completely different.

Even if he is as tough as him, he is a little intoxicated for a while.

"It's not the same plane, but I know that this is our common source of life...... I will definitely protect you. ”

Looking at the beautiful blue planet in front of him, Lin Feng inexplicably surged out of an emotion of wanting to protect it, and then let out a long breath and rushed into the atmosphere.

In the next second, he was back on the surface.

This time he landed in Huaxia, Shennongjia.

"Babata, where did Brother Huyanbo hide that thing, give me a navigation."

Lin Feng glanced at the dense jungle around him, as well as some of the beast fluctuations that were transmitted from time to time, but his heart was calm.

These mutated and evolved monsters on the earth, although they are huge, they are useless, and they do not have the strength of monsters of the same size in the universe, and they are not a threat to him.

Even if he appeared in front of the monsters, they wouldn't be able to notice.

"Yes, master!" Babata's voice came, transmitting a map to Lin Feng.

After Lin Feng received it, his figure disappeared in place in an instant.

And when he reappeared, there was already a huge mysterious orb in front of him.

The sphere was over 800 meters in diameter and had many potholes on its surface, apparently for many years, but not a single plant had grown around him.

"Realm Master Zerg Brood...... This is the most valuable treasure left by Huyanbo! ”

(End of chapter)