The neutron cannon spat out brilliant tongues of fire, and antimatter orbital bombs fell on the giant building one after another, and for a time the rumbling sound of cannon fire resounded through the heavens and the earth.

The Tomahawk has only two medium-sized guns, and its main attack method is not artillery fire, but the numerous combat drones it carries, which, once released, will bite each other alive like a swarm of poisonous bees.

Fearing that the dust in the hypergravity zone would damage these valuable drones, Xia Fei did not use them, but attacked with the only two artillery pieces he had.

"What are you doing here?" The ghost asked, puzzled.

He couldn't understand the significance of Xia Fei's indiscriminate bombardment of these old square buildings, the price of an antimatter orbital bomb was as high as 30,000 star coins, and two high-speed guns fired 180 shells per minute, and the consumption of ammunition alone would cost more than 5 million star coins per minute.

Xia Fei frowned, did not order the artillery to stop, and said, "I suspect that these things are not buildings at all. ”

"Not a building? What could that be? ”

Due to inertial thinking, Xia Fei also thought at first, like the ghost, that these huge square objects were a kind of architecture, and it would never be possible to produce such a standard cube boulder in the natural environment, unless it was artificially made.

But when Xia Fei really came into contact with them, this thinking changed again, there were no doors and no windows, Xia Fei couldn't think of anyone who would build such a strange building, and he began to suspect in his heart that these things were entities at all, not buildings.

The depth probe on the Tomahawk was disturbed by the surrounding environment and could not be used, so Xia Fei decided to use the most direct and effective method to blast these boulders with cannonballs to get a glimpse of what was going on.

If they were buildings, they would have been torn apart by artillery fire, otherwise they would have been man-made concrete blocks.

It is not easy to construct solid concrete blocks with a length of more than a kilometer, a width and a height of more than a kilometer, so why discard them on this uninhabited planet after they are built? Xia Fei couldn't imagine it, and now he had to figure out the true structure of these big guys first.

"Stop" After two minutes of continuous attacks, Xia Fei ordered the main control computer to stop bombarding.

Ghost Shadow and Xia Fei stood in front of the porthole and looked ahead, and when the dust cleared, the two of them couldn't help but gasp.

A rectangular boulder has been cut in half from above, revealing countless pieces of broken concrete, the metal structure looming within it.

These huge square objects are indeed solid

They are not any buildings

No one can imagine who would throw these huge blocks of concrete here, and what they would do for them?

Lighting a cigarette, Xia Fei sat back in his chair, frowning and thinking hard.

The ghost thought for a moment and asked, "Since these boulders are solid, could it be that someone wanted to use them to build some kind of structure, but they were discarded here because they were useless for some unknown reason." ”

As soon as the words came out, the ghost himself laughed first, each boulder is no less than a kilometer long, wide and high, whether it is feasible to build a house with such a large stone, even if it is really built, how big will it be?

What is a super building with a height of hundreds of thousands, or even millions of meters, used for? Playing golf?

At least a building with a human body of a million meters is unbearable, and unless there is some kind of extremely tall and intelligent race in the universe, it is hard to imagine anyone who needs such a large building.

In fact, human beings will also build some super-large bases, and most of the methods of construction are to find some small planets and then hollow out their interiors, install a lot of artillery and other defensive facilities on the periphery, and turn them into movable bunkers, which is the case with those bases that Xia Fei saw in the Wilderness Star Field.

The problem is that these stones are shaped like bricks, and if they are used to build a military base, it is far more difficult and unstable than hollowing out a planet, and it is even more absurd if it is to build civilian houses, and how is it possible to cram hundreds of millions of people into a building.

The Tomahawk continued to circle around the crimson planet, and Xia Fei had been thinking about the purpose of the stone, so he did not give further instructions to the battleship.

Looking through the porthole, the arrangement of these stones is not uniform, some are closely connected to each other, some are far apart, but they are all placed very neatly, facing the dark starry sky, and they do not look like they are still here at random, the reason why Xia Fei thought that they were buildings from the beginning was also affected by the placement of these stones.

"It's not evenly placed, but each piece is neatly placed?" Xia Fei muttered to himself suspiciously.

Suddenly, his mind spun around.

"Quickly raise the altitude to 150,000 meters," Xia Fei ordered.

The Tomahawk turned around and flew in the opposite direction, and after a while, Xia Fei stood at the porthole and looked at it from afar, only to see that these stones were connected horizontally and vertically, and they looked like some kind of unknown calligraphy.

"Look," Xia Fei said in a deep voice excitedly, "Do these stones connect like words?" ”

"Words?" The ghost was stunned suddenly, "Like, it's indeed very much like words, the structure is scattered but not messy, but I don't know what kind of text this is." ”

Xia Fei smiled slightly, and tapped his fingers on the light curtain to record these words.

Due to the circular shape of the planet, Xia Fei and Ghost Shadow did not notice the arrangement of these stones at first, but if they were to be seen as a plane stretched out, the stone divisions on the planet would appear to be orderly.

The translation chip in his brain was constantly busy, but he never understood the meaning, Xia Fei shook his head, if even the advanced intelligent translation chip could not be interpreted, it could only mean that the structure of the text was too complex and too rare.

Although there was no way to know who dropped these huge stones here, and what the words composed of these stones meant, Xia Fei was still relieved, after all, he had already found the traces of Old Potter and figured out the purpose of these stones.

"It's at least a good start, and the fact that Old Potter arrives here and leaves shows that he's at least alive." The ghost said.

Xia Fei nodded, and ordered in a deep voice: "The jump engine begins to replenish energy and move towards the second target." ”

……

The purple area No. 2 delineated by Old Porter was not far from here, and it only took a jump to reach it, and since the gravity of the two areas was almost the same, the jump was not as unbearable as it had just been.

Judging from the star map, this place has left the Black Abyss Star Field and entered the real unexplored area, and this area is relatively large, with a gravel belt around it and four planets are all in the purple area, which needs to be explored one by one.

The signals received by the radar system were still chaotic, and Xia Fei had to continue to rely on visual inspection and blurred video systems to find the traces of Old Porter.

First looking for the four planets one by one, these planets are the same as many barren asteroids in the universe, there is nothing special, Xia Fei pursed his lips and drove the Tomahawk into the gravel belt.

There was no gravel belt found on the planet, and Xia Fei naturally did not report any hope, and with the mood of giving it a try, the Tomahawk broke through the layers of obstacles and slowly advanced among the countless rubble.

"This belt of gravel is too long, and it would take a few months to search it all." The ghost said as he looked out the window at the endless rubble.

Xia Fei frowned, and ordered in a deep voice: "The metal detector is running at full capacity, scanning this gravel belt in all directions. ”

Even when gravity is not obstructed, it can be difficult to explore a wide belt of rubble, as the chaos of debris can greatly interfere with any signal transmission, especially in this hypergravity zone.

"Using fuzzy scanning, we only search for signals that are larger than or close to the frigate-class warship." Xia Fei continued to order.

Metal detectors quickly began to operate, and the crushed stone already contained varying amounts of metal, so it was necessary to filter out those that were small in size or insufficient in purity.

Xia Fei didn't really have much hope for the metal detector, after all, the interference in the hypergravity zone was so serious that almost all the electronic equipment could not operate.

Surprisingly, the metal detector unexpectedly found a dazzling signal

This signal is about tens of thousands of kilometers away from the Tomahawk, and in terms of signal equivalent, it is very large, beyond that

There are no words to describe Xia Fei's shock, according to the signal, this metal object is at least more than 1.5 billion cubic meters

What a concept it is

It is simply a metal city, large enough to accommodate tens of thousands of people.

What is such a huge metal, and a purified, high-strength metal?

"Full speed ahead," Xia Fei ordered in a deep voice.

The Tomahawk sped up and headed for its goal.

"How can there be such a large metal substance, is it a small planet made entirely of metal?" The ghost asked.

Xia Fei shook his head, "Impossible, the metal detector shows that this is a purified rigid strength synthetic metal, that is, it is a man-made object." ”

Most of the metals distributed in the sea of stars exist in the form of ores, although they are numerous but not pure, according to the metal detector, this huge volume of material is purified and smelted by many different metals, artificially cast, so it is impossible to float in space metal blocks.

"Artificial matter is even more incredible, you must know that the largest warship supercarrier in the human alliance is about 500 million cubic meters, which is already the maximum limit for human beings to make warships, and there is no greater warship than it, and its volume is equivalent to three supercarriers, how is this possible" The ghost was completely shocked, and his voice was already hoarse.

"Could it be that the metal detector is being disturbed by gravity and is mistaken?" The ghost wondered, the huge man-made object of 1.5 billion cubic meters was far beyond the limit of the ghost's imagination, so he was puzzled.

Xia Fei said in a deep voice: "There is indeed such a possibility, it is true that gravity will interfere with the signal, but it is more likely that the volume of this thing is larger than 1.5 billion cubic meters"V