In the next few days, Chu Jungui was busy. He traveled back and forth to the forest, exploring deeper and deeper, expanding the known area in preparation for his eventual foray into the valley.

The good news is that he dug deeper into the area where the pyrrhotite was found, and finally found a small vein. This vein is associated with copper and nickel. With copper, he was able to try to build some electrical equipment, and at the same time, ammunition for heavy machine guns was secured.

Nickel is an important component of the basic ferroalloy, and the day after finding nickel, Chu Jungui's axes, long saws, and arm shield daggers and the like have all been updated. He finally got out of the dilemma of having to change an axe one day.

But what he wanted more was lead. Now it is no longer materials that limit his production capacity, but energy. Although more stellar energy panels can be made, there are only two polymer batteries. This kind of battery is not what he can make with his current resources, and it will not be possible to build it even if the technology advances for several generations.

Now that he has a large amount of sulfuric acid in his hands, lead-acid batteries have become the most realistic choice. But after failing to find the lead ore for several days, Chu Jungui had to bow to reality, and obtained a little lead by dismantling the materials of the rescue cabin, which was considered to have collected all the materials.

Fortunately, lead-acid batteries use more sulfuric acid, which is enough for him to make several battery packs, which together can be equivalent to three polymeric batteries.

More batteries means more capacity.

In fact, in this process, Chu Jungui has already scolded the black heart and greed of deep space energy in his heart many times. Whether it's a printer or a refiner, he can use other energy sources, but in the wilderness survival stage, where can he find those advanced energy sources? In the end, he can only use batteries. In fact, as long as you add an energy conversion and filtering component, you can directly use the stellar energy board for power supply.

So many colonies, so many ships, each ship must have a rescue pod, and each rescue pod will have a basic survival kit, if all add an energy conversion component, then the additional cost will add up to an astronomical amount.

But Chu Jungui doesn't believe that how many people can survive on two batteries. Not everyone has the ability to modify and design blueprints on their own, as he does.

The reality is that he can't make energy components that can match the printer for the time being, and he can only live on batteries.

However, the energy situation has improved significantly compared to the beginning. He is now equivalent to a rich man with five batteries in his hand, and some things that he didn't dare to try before can be done now.

For example, heavy machine guns.

There are materials and energy, so on the sixth day, Chu Jungui finally got the heavy machine gun he designed, as well as ...... One hundred rounds of ammunition.

In the work of making bullets, which is mainly large, the printer is outrageously inefficient, and the bullets have to be printed in one shot. After staying up all day, Chu Jungui really didn't plan to wait any longer, and was ready to rely on this ammunition to go out to explore.

He had lived in the area for so many days, and his range of activities had grown, and he had finally caught the attention of certain beings. During the rest of the last two nights, he clearly felt something lurking in the distance, and watched this side quietly. Perhaps the wooden house was something they had never seen before, unknown void, they did not rush over immediately, but continued to observe, for two consecutive nights, until dawn quietly left.

Although Chu Jungui has a certain ability to see at night, he does not intend to rashly leave the wooden house at night, which is the environment that the other party is good at. What's more, it is obvious that it is not one, but some kind of social creature, which is even more dangerous than a lone beast.

However, with a heavy machine gun in his hand, Chu Jungui had confidence. When it was nearly noon and the sun was shining, he would carry a heavy machine gun and search the area where the unknown creatures were lurking.

The lurking area of unknown creatures is full of rocks and low vegetation, and the terrain is complex, making it a good place to hide and hide.

Chu Jungui spent an afternoon carefully searching the entire area, and only found a trace of suspected footprints. The imprints show that the lurker has three legs, appears to be walking upright on both feet, and should have sharp claws at the end, which can be retracted.

Combined with other traces, judging comprehensively, these lurkers are probably about two meters tall, and their combat power is not low.

Chu Jungui circled around this claw mark a few times, and then had an idea in his heart, so he turned around and left. When he walked away, among the branches and leaves in the distance, he slowly opened a pair of eyes and watched his back.

Returning to the wooden house, Chu Jungui knew that he was probably invading the hunting range of some kind of predatory creature. This predatory creature may have rudimentary intelligence, but that's all, it should not be a high-level intelligent life, at least it doesn't know how to use equipment. However, they come out in groups, with both speed and agility, and I am afraid that the lethality of the instant explosion is quite amazing. Moreover, they are very cunning and good at hiding themselves, at least until they lurk around the wooden house, Chu Jungui did not know about their existence at all.

According to the habits of predatory creatures, their patience must be limited, and it will not be long before they will attack tentatively.

Chu Jungui is not a person who sits idly by. As soon as he got back to the cabin, he set about getting ready. After a few hours, he had laid seven or eight traps around the hut in one go, and then he stopped. Laying traps is naturally a necessary part of basic survival training, and when it comes to Chu Jungui's hands, it has only been slightly improved.

When everything was done, he went back to the hut, turned off the lights and went to sleep. After lying down, he slowly turned over and sat up, holding the heavy machine gun in his arms, slowly loading the bullet, pointing the muzzle of the gun through the wooden wall outside the house, and began to wait.

As night fell, the temperature began to drop and the wind began to pick up. Dark clouds drifted through the sky, obscuring the already dim skylight.

Chu Jungui squinted his eyes to block the faint glow in his pupils. Through the cracks in the walls, you can see a faint green light in the night, slowly approaching.

Chu Jun calmed down and waited patiently for his opponent to approach. He is very aware of the performance of the heavy machine gun in his hand, after all, there is a lack of professional tools when it is manufactured, and the quality of the materials is not up to par, so the power is huge and the accuracy is poor. Besides, he has a limited number of bullets, and each bullet is made by himself little by little, and cannot be wasted.

The green dot gradually approached, and the muzzle of Chu Jungui's gun also touched the wooden wall.

In the night, a black shadow suddenly jumped up and pounced on the wooden house, its long claws so fast that it was almost invisible, and swept towards the wooden house!

Almost at the same moment, a dull gunshot rang out, the wooden walls exploded, long fires erupted, and black shadows slammed backwards as if they had been struck by an invisible sledgehammer.

The black shadow landed, and one actually rolled over and climbed up, hunched over, staring at the wooden house.

"Can you still move?" Chu Jungui was amazed. Three shots in a row at such a close distance, not only did he not die, but he seemed to want to fight back, these guys were indeed strong enough.

However, the reason why the heavy machine gun is the king of the battlefield is because it was never intended to solve the problem with three bullets.

Three bursts, that's what an assault rifle can only be a treasure for.

With a bang, Chu Jungui stepped on the broken wooden wall and rushed into the night, and the heavy machine gun kept spitting out the fire dragon, sweeping on the black shadows that rushed up around him.

The two black shadows in front were instantly blasted upside down and flew out, and the third one had already arrived in front of Chu Jungui!

By the light of the gun, it was finally possible to see what kind of creature was attacking. They are upright-walking humanoids with long slender limbs and sharp claws, but a head shaped like an insect. At this moment, the mouthparts of the head that flew over were wide open, constantly flowing green and yellow saliva water, which was extremely terrifying, and a strong sour smell could be smelled from a few meters away. If you bite it, I'm afraid you can bite off half of Chu Jungui's head.

In the face of the pounced insect man, Chu Jungui was not afraid, and with a turn of the heavy machine gun, the muzzle of the gun almost touched the chest of the insect man, and then pulled the trigger fiercely!

The blazing warhead with terrifying kinetic energy all blasted into the chest of the insect man, so close that even the muzzle flame could burn the insect man, but it was not blown upside down. The first few bullets did not penetrate its body, and all the bullets stopped in its body.

Chu Jungui gritted his teeth, his heart was ruthless, and he pressed the trigger tightly!

Heavy machine guns never rely on point fire!

More bullets slammed into its chest, and the red-hot metal jets tore through its torso before finally exiting its back. The body of this insect man was directly broken in two by the ferocious fire, and the upper body flew backwards and fell to the ground with a bang.

Chu Jungui was killed, and with a snort, a mouthful of saliva spit on the ground, and proudly scanned the surroundings.

These insects still want to fight in close combat, but they really don't have brains, don't you see that he has a heavy machine gun in his hand?

He is a man who has mastered the melee firearm combat technique 0.1a, and the heavy machine gun is in his hand, which is an out-and-out melee artifact.

The rest of the wormmen finally felt frightened and turned around and ran.

Chu Jungui looked at the direction they were running, and he didn't chase after them, but just sneered.

The two-headed insect man's body suddenly sank, stepped into the trap, and immediately screamed loudly. They jumped up like an electric shock and jumped dozens of meters, but when they landed, their feet were weak and they fell headlong. In the blink of an eye, they got up again, rolling and crawling away, wailing as they went.

Their long, powerful legs, whose skin had turned from dark yellow-green to charred black, were still emitting smoke, and they looked painful when they touched the ground, and they fell directly several times.

Chu Jungui was not surprised, no matter how strong these insect people were, as long as they were still living beings, it was impossible for them to be indifferent to the 98% pure sulfuric acid in the pit.

He doesn't have much else these days, but there is so much sulfuric acid that he can't fit it.

There were also a few lucky insects who didn't step on the trap and managed to escape. Chu Jungui didn't care, after this lesson, he thought that they should not come again in a short time. Even if they dare to come, what awaits them will no longer be these simple and passive trampling traps in front of them.

Seeing that there was still some time before dawn, Chu Jungui began to rummage through the memory materials while cleaning up the battlefield, to see if there were any advanced trap layout version 2.0 and other materials that could be used for reference.

Although the trap information was not found, but he had a fight with the insects, Chu Jun also knew their characteristics. It seems that the surrounding area is their hunting ground, and if they overturn this group of insects, there is nothing to worry about Chu Jungui.

Except for ammunition.

It took him another whole day to print out a hundred rounds. At this time, he was able to set off with a heavy machine gun, ready to occupy the valley.

The small lake in the valley is the only source of water on the left and belongs to the land that must be occupied.

Chu Jungui didn't know that at this moment, a transport spaceship was entering the orbit of the planet and began to land on the surface of the planet.

In the cabin of the spaceship, a burly man in military uniform faced hundreds of heavily armed soldiers, both men and women, and said in a deep voice: "The target area of this operation is a valley with a small lake in the center. After a short airdrop, you are no longer friends and comrades-in-arms. Remember, everyone you meet on the battlefield is an enemy! There will only be one winner in this battle!"