Shaking his head, Lin Yun got rid of these chaotic thoughts.

He needs to become stronger, whether it's to survive or to protect the obsession in his heart.

He walked over to the dead young man with a scar and began to search for the body of the young man with the scar.

To Lin Yun's disappointment, the scarred young man only had more than three hundred martial coins, some dry food, and a bottle of unknown potion on his body, and the rest was nothing, let alone the metal materials that Lin Yun thought.

However, his sword attracted Lin Yun's attention, it was soft and sharp, and was collected by Lin Yun into the folding space.

After collecting it, Lin Yun directly threw the scarred young man into the mountain forest, and returned to the tree hole in a somewhat depressed mood.

Looking at the little spotted leopard that was still lying on the ground, with a gentle fluctuation in the lower abdomen, Lin Yun sighed lightly and walked into the tree hole.

When the little spotted leopard is dead, bury it yourself, and let it enjoy the last time in this world.

Back in the tree hole, Lin Yun's mood was quite complicated.

Everything today was too much for him to expect.

The originally invincible wooden spear was completely ineffective after encountering this scarred youth, if it weren't for the timely appearance of the little spotted leopard, Lin Yun was afraid that he would have been out of this world for a long time.

It can be expected that if he kills this scarred youth now, it won't be long before he will chase a stronger one. He didn't want today's events to happen again, and good fortune wasn't always on his head.

He must strengthen his equipment and develop the huo medicine qiang as soon as possible.

Otherwise, let alone reclaiming his own mecha from Pan Mingxuan, whether he can survive or not is two words.

Lin Yun expected that Pan Mingxuan would definitely be much stronger than today's scarred youth!

Thinking of this, Lin Yun hurriedly took out the detector from the folding space, as well as the scarred youth's thin sword and a pair of metal gloves.

The metal glove was not corrosion-resistant, so Lin Yun could only put all his thoughts on this thin sword. Aside from the metal glove, the Rapier is the only metal substance he has on his body now.

Whether you can make gunpowder qiang or not depends on this rappier.

Lin Yun threw the thin sword into the detector and began to test, and his mood became heavier and heavier as the detector operated.

Soon, the detector gave a series of data.

"Hardness eight, corrosion resistance twenty, heat resistance sixteen. ”

Seeing a series of data on the thin sword, Lin Yun's heart instantly cooled.

What are you kidding, corrosion resistance and heat resistance are passed, but the hardness is ...... It's too low!

Come to think of it, the sword is extremely soft, and as long as it shakes slightly, the blade will be highly distorted, and it would be strange if it was strong.

Just when Lin Yun's heart was like ashes, his eyes suddenly glanced at the metal glove next to him, and a thought suddenly popped up that shocked Lin Yun's spirit.

Matter can be fused.

Metal gloves have slightly lower corrosion resistance, but rapiers have higher corrosion resistance. The hardness of the rapier is low, but the hardness of the metal glove is extremely high.

If two metallic substances are fused together, an alloy is formed. If the hardness and corrosion resistance are neutralized, this problem will be solved.

As soon as he said it, Lin Yun immediately took out the air mixer and threw a pair of metal gloves into it first, and under the air mixer, the seemingly hard metal gloves instantly turned into powder.

Then, Lin Yun took out the powder of the metal glove, put it into the thin sword, and repeated the same action to obtain the powder.

"The hardness of glove powder is high and the corrosion resistance is low, while the hardness of the thin sword is high and the hardness is very low......," Lin Yun calculated the data formulas in his mind, and immediately put in half of the powder of the metal glove, and then put in a third of the powder of the thin sword.

Turn on the air mixer, and the two powders are suddenly mixed together, and it is impossible to distinguish which is the former and which is the latter.

Looking at the powder kneaded together, Lin Yun gently pressed it on the air mixer again, and the powder contained in it instantly began to melt and turned into a silver liquid.

This air mixer is specially designed for the fusion of substances, not only has a strong grinding function, but also has a high temperature of up to 30,000 degrees inside, which can melt almost all elements. Like these metal powders, according to Lin Yun's guess, most of them are steel, copper, etc., with a melting point of one or two thousand degrees, and directly turned into liquid at a high temperature of 30,000 degrees.

When it melts into liquid, the mixer runs again, and in a moment, the liquid is completely integrated into one alloy form.

Lin Yun turned on the mixer, and the liquid quickly froze under the icy air, turning into alloy metal.

I picked up the alloy metal and put it back into the tester.

"Hardness fourteen, corrosion resistance sixteen, heat resistance seventeen. ”

"It's a little bit harder, go on. Lin Yun put the alloy into the air mixer again, put some glove powder, and repeated the above reaction.

"Hardness sixteen, corrosion resistance fifteen, heat resistance eighteen. ”

Looking at the data displayed on the detector, the corners of Lin Yun's mouth finally raised a faint smile.

Now the data displayed by the metal has made ** that can fully withstand the strong corrosion of gunpowder.

In the tree hole, with the firelight hanging in the middle of the hole, crackling and swaying from the bottom to the top, Lin Yun took out the 3D printer from the folding space with a little excitement in his heart.

3D printers have appeared in the 20th century, which can print simple 3D models, in the 21st century, printers have entered a stage of rapid development, and can print various things such as houses and cannons, and in the 22nd century, 3D printers have reached the peak, it has printed all kinds of things unchanged while shrinking its huge size.

And the twenty-third century, it was the century that belonged to the mechanical master Lin Yun.

Under Lin Yun's transformation, the latest 3D printer is one-third the size of a person, has the most efficient intelligent optical brain inside, and automatically contains relatively simple three million model processing. And gunpowder qiang is just one of the simplest of them.

And in Lin Yun's folded space, this is undoubtedly the case.

He placed the 3D printer on the ground and put the alloy powder into the printer material bag one by one.

Lin Yun did not use a 3D printer when making wooden guns, mainly because the material of wooden guns is soft, and using a printer also needs to make wood chips, which is more time-consuming than making it himself.

But alloys are different.

Machinery, the slightest difference of a thousand miles, and the alloy is much harder than wood, if the knife and dagger in the hand is a little slippery, it is very likely to fail, and now the alloy metal has turned into metal powder, it is safer and easier to use a 3D printer.

"Print pneumatic gunpowder qiang. Lin Yun said a word of standard Mandarin to the 3D printer, and the printer instantly began to squeak.

About two minutes later, Lin Yun had already obtained a shiny, silver-gray model weapon in his hand.

Lin Yun put the printer into the folding space, and then took out the high-pressure production tool and began to make air pressure for this qiang.

Ordinary gunpowder qiang uses springs, but Lin Yun feels that springs are prone to problems, and he prefers air pressure. And the latter, when well-made, will far surpass the former.

If it is a spring machine, it can be done directly with a 3D printer, but the strong air pressure power required inside the air pressure machine can only be achieved by manual processing.

It took more than twenty minutes for Lin Yun to place a strong air pressure power in the gunpowder qiang.

As with wooden guns, the barrel emits extremely strong air pressure when the trigger is pulled, which pushes the gunpowder out of the gunpowder at a rapid pace. In addition, the air pressure emitted from the eruption will produce a high temperature of 1,000 degrees Celsius, which can cause the gunpowder to heat up instantly.

Looking at the gunpowder qiang that had been done, Lin Yun touched his nose, and threw all the remaining metal into the mixer, which was mixed with a lot of soil, and in a moment, the metal and the soil were mixed together.

According to the detector, the metal soil mixed with the soil has a hardness of six, a corrosion resistance of four, and a heat resistance of five.

Subsequently, Lin Yun put the metal soil and some gunpowder into the 3D printer.

Not long after, rows of bullets wrapped in metal soil and gunpowder inside appeared in front of Lin Yun's eyes.

Gunpowder can burn quickly to produce high temperatures, but it does not explode on its own.

In order for it to explode, it must be wrapped in a sealed hard shell, and after the gunpowder produces a large amount of high-temperature gas, the inside expands, and the hard shell will explode if it cannot withstand it.

And the hardshell of six hardness is just right.

Lin Yun couldn't wait to load the bullet into the magazine and rushed out, ready to try the gunpowder qiang that he had painstakingly made.

But when Lin Yun ran out, the whole person was shocked.

I saw a knee-high leopard standing outside the tree hole, it had a pair of large brown eyes, its fur was yellow with black spots, but the right side of its lower abdomen was stained with a large patch of blood......

This little leopard, didn't he save himself just now, and the little leopard who was stabbed in the lower abdomen!

"Wow~" The small mouth with long hairy whiskers on both sides of the little spotted leopard is slightly open, revealing a small pink tongue, making a very cute sound.

Seeing its appearance, Lin Yun only felt as if this little spotted leopard was a cat that he had raised for many years.

Lin Yun couldn't help but open his mouth and arms, and the little spotted leopard seemed to be psychic, it ran forward a few steps with its flexible limbs, and jumped directly into Lin Yun's arms.

This little guy, who was not big, but was at least seventy or eighty pounds, threw himself into Lin Yun's arms and made Lin Yun stumble, and almost fell to the ground.

The little spotted leopard seemed to be very happy, and its little pink tongue licked Lin Yun's face vigorously, if you didn't care about its weight, it really looked like a kitten.

Lin Yun was cautious in holding the little spotted leopard, for fear of touching its wound again. But it's okay not to look at it, but looking at it like this, it shocked Lin Yun.

I saw that the original bloody wound of the little spotted leopard had not only stopped bleeding at this moment, but also scabbed.

Lin Yun was stunned and amazed.

This recovery speed is too fast.

Could it be my own potion? No, it must not be, my leg injury took a day to scar, and it took three days to heal.

But this little spotted leopard is scarred...... It seems that it only took about half an hour to make bullets and gunpowder qiang!

Although I can't figure out the reason, it's always a good thing that the little spotted leopard scarred and survived smoothly, Lin Yun smiled happily and directly hugged the little spotted leopard into the tree hole.

After putting the little spotted leopard into the tree hole, Lin Yun stood outside the tree hole, took out the gunpowder qiang and aimed it at a big tree with the virtual locking technique, his pupils narrowed slightly, and his index finger gently pulled the trigger.

His mood was a little excited, even though it was only the simplest machine that Lin Yun had made in the past ten years.

But whether Lin Yun can survive well in this world, whether he can recapture the mecha, whether he succeeds or fails, depends on this thing!