Su Yu stood on top of the mountain and looked down. It's just that the distance is so far away that I can't see the scene below. Su Yu frowned slightly, and there was an urge to go down to find out.

However, years in the wilderness have made him develop a cautious surname, and all unknown things cannot be easily touched.

In this era, even if it is a cute rabbit, it may be a deformed form of a school-level alien beast.

Su Yu tentatively controlled the stone armor to slowly lengthen and probe downward, and there was nothing abnormal!

After a moment of hesitation, Su Yu's body slowly left the ground, floated towards the cave, and then slowly fell.

Su Yu descended very slowly, vigilantly observing the surrounding environment. The walls of the cave are very smooth and there are no climbing plants.

The further down, the wider the space became, but Su Yu gradually felt a trace of dull depression. It was quiet, there was no sound, only the whistling wind above the entrance to the cave.

Gradually, Su Yu descended to one-third of the height of the cave. Here, Su Yu felt a noticeably heavy pressure, and there was also a slight feeling of discomfort on his body.

Su Yu continued to descend, along the cave wall, and slowly came to about a hundred meters above the edge of the swamp, at this height, Su Yu could already make out the true face of the white object below.

It was a dense mountain of white bones!

These white bones are varied, and in terms of volume and shape, they contain the bones of normal humans and animals of the old era. There are also huge skeletons of alien beasts. Some of these skeletons are as thick and thin as an adult's body.

Such a creature can never be a creature that is already on the earth?

Su Yu's face gradually became solemn, what kind of disaster and what kind of accident did it take to pile up white bones within a radius of 100,000 kilometers. How many dead beings must have to be piled up to form such a tragic scene.

At this time, Su Yu understood why he saw so many ghost fires flickering last night!

Su Yu looked up, and in the distance, the exit from the top of the mountain looked like a needle's eye. If it weren't for the light stolen from it, it would be almost unrecognizable.

Suddenly, Su Yu realized a question: the entrance to this cave was so narrow, how did these huge skeletons enter the swamp?

Moreover, there is no air movement here, how did those phosphorus fires rise to the mouth of the cave at a height of 10,000 meters?

When Su Yu is at the top of the mountain, he can overlook the panoramic view and take in the whole view of the cave. But in the cave, Su Yu realized that he was so small.

He was suspended at the edge of the swamp, no matter forward, left, or right, there was no end in sight, and everywhere was a gray patch, and the island in the center of the swamp could not be seen at all.

Su Yu remembered that it was the only green area in this barren swamp.

Su Yu tentatively flew towards the center of the swamp, but after walking for less than a few miles, Su Yu's face suddenly changed greatly. He was keenly aware that the further he went, the greater the attraction on the ground. According to the current growth rate of attractiveness, as long as he goes out for a distance, Su Yu may be in a deep predicament.

And, probably because it can't be circulated all year round, the air here is muddy. Not only that, but the air here clings to the human body, and it feels as if it has entered the mud, and there is a lot of resistance.

As Su Yu gradually approached the center, an inexplicable throbbing suddenly rose, making Su Yu's heart tremble.

Su Yu decisively pulled back, and at the same time flew towards the mouth of the cave. As his body gradually rose up, the throbbing in Su Yu's heart gradually weakened.

More than ten seconds later, Su Yu stood on the top of the mountain again. Su Yu took a deep breath of air, felt the breeze on the top of the mountain, and the snow particles on the skin of the cold man, and suddenly had a feeling of being reincarnated.

After glancing down, I saw the green island and the swamp again.

"Perhaps, only by standing at a certain height can you see the true face of the environment you are in!" Su Yu seemed to realize something, and muttered to himself in a low voice.

Taking a deep look at the cave at his feet, a map suddenly stretched out in Su Yu's mind. There is a point on the map marked with a big red cross, and next to the cross is a line of small black letters: Thousand Caves, Buried Bones!

Thousands of miles north from this point in the place of bones, there is a small green dot, and next to the green dot is marked the base station. And about 400 kilometers west from the base station, there is also a small orange-red dot marked on it: Cherry blossom snow!

And in the middle of the three station signs, there is a vast expanse of darkness. Su Yu could fly all the way from the buried bone place to the base station in a stealth state, but he couldn't stop to check the situation on the ground. No one knows how many deadly dangers lurk along the way!

Su Yu stood up, his wings flashing, and the thunder rolled. Su Yu went all the way north, and after a quarter of an hour, he came to the gate of the small station of the base.

When Su Yu walked into the small station of the base, Zhao Yongsan was staring at the ceiling in a daze. Su Yu threw him a tube of nutrients and walked into the warehouse of the base station.

The base station itself was set up as a supply station for the Ghost Rider Gate in the wilderness, so the warehouse of the station contained a large amount of food, guns, ammunition, armor, weapons, etc.

There are many advanced technological weapons such as energy cannons and laser guns inside the base. Su Yu swept away unceremoniously.

Those ordinary guns and ammunition may not pose much threat to the alien beasts and zombies in the wilderness. But in Su Yu's hands, it was different, after his energy genus and surname bonus, even if it was an ordinary gun, it could kill a private-level alien beast.

However, there was another reason why Su Yu took these things, they were all made of iron.

Su Yu didn't want to eat these guns, but to sell them and exchange them for the steel he needed.

When he was petrified, Su Yu didn't feel the shortage of raw materials, there were many mountains on the earth, and he didn't have to worry about the source of the stone at all.

But steel is different, unlike stones, which are everywhere on the streets, and Su Yu must always try to collect the raw materials of steel.

The amount of steel required by the Gold Eaters to evolve the Dark Iron Body was outrageous. Su Yu has always been resentful of this, but there is nothing he can do.

For a gold eater to evolve into a body of black iron, he must have steel. It's a pity that the large iron ore mountain ranges that are now known are all in the hands of the large power organizations of the Star Alliance. The situation in the wilderness is complicated, and it is not easy to find an iron ore mountain.

Su Yu could only slowly collect steel while collecting information about iron ore in the old era. Unfortunately, the information of the old era is no longer applicable in the new era. In many places, mountains have become lakes and lakes have become land.

The whole planet has been changed beyond recognition!

Moreover, even if the Iron Ore Mountain Range was discovered, if there was a general-level fierce beast nearby, Su Yu would have to retreat.

What Su Yu can do now is to collect steel and improve his cell life at the same time.

Although steel is in short supply, there is still a way to go. Only the improvement of the cell living surname is a headache for Su Yu all along.

In fact, what Su Yu lacks most now is not iron ore, but the source power of life, the cell living elixir, and the level of ancient qigong, as long as these are improved, you can find an iron ore like an evolved stone body and swallow it in one go.

However, the absorption of life source power requires endless slaughter of zombies, which is easy to provoke the pursuit of the zombie king. The Cell Living Potion required a huge amount of wealth, which was beyond Su Yu's ability to pay. Only ancient qigong is the only thing Su Yu can do now.

Ancient Qigong, of unknown origin, can not only enhance the strength of cultivators, but also be used to save people. However, only the cultivation of the Gold Eater will have a significant effect. Therefore, ancient qigong is one of the treasures that Su Yu currently relies on to press the bottom of the box.

Zhao Yongsan ate three tubes of nutrients in a row, and finally fell asleep.

Su Yu walked to the cultivation room in the base and sat down cross-legged......

ps: There will be updates in the evening, are there any recommendations and rewards?