These projects, too, will have to wait until the caravan returns. Dealers need time to choose their own direction and improve their craft. And more importantly, the profits that need to be brought back by the caravan will strengthen their determination to go out and develop, and also provide them with travel expenses and costs.

Except for the occasional pointers who came to ask for some tips and key points, Shi Lei was concentrating on his own training.

After this period of unremitting efforts, Shi Lei finally regained control of his body and could command him as before. With strength as the foundation, Shi Lei can proudly say that his martial arts have also made breakthrough progress.

In order to verify this, Shi Lei specially called the blacksmith uncle to practice. In the case of crushing the opponent with strength, Shi Lei finally no longer had to be pressed and beaten by his uncle.

However, apart from the point of strength, if you simply talk about the actual level of martial arts, Shi Lei's understanding of moves and other aspects is still inferior to that of his uncle, and he still needs continuous practice.

After finally letting go of his worries about not being able to control his body, Shi Lei refocused his attention on the transformation of animals. I have long wanted to test it, and what is the effect of upgrading and transforming those animals that have been modified, but now I can finally settle down and study it carefully.

The most convenient animals to gather are the spiders that have been hiding on the roof of the cottage. These little guys were very close to Shi Lei, and after receiving the order from the system, they quickly climbed around Shi Lei.

At the same time, surrounded by such a few fluffy poisons, even if he knew that these guys were very obedient and had never been a reptilian Shi Lei, he still felt a little creepy.

After settling down, Shi Lei began to experiment with transforming them again.

"The toxicity of spiders has reached its limit, and it cannot be modified, and the system cannot go against the laws of nature." The system's response poured a basin of cold water on Shi Lei's head. However, considering the toxicity of spiders, it is deadly enough, which doesn't seem too unexpected.

"Then let them have the bouncing ability and eyesight of 'jumping spiders'." Shi Lei took out the alternatives.

Jumping spiders are accustomed to using their own spider silk as a safety rope, playing rappelling or something, to hunt, and their jumping ability is the best of all spiders.

In order to complete such a difficult action, their eyesight has become the strongest existence among spiders, and it is even similar to the human eye. It is enough for them to complete a series of tasks such as tracking their prey and predicting their own landing point. And it is also a 360-degree panoramic ultra-wide-angle vision, in a sense, it is a complete explosion of human vision.

After completing the transformation of all the spiders, it seems that the situation of the scorpion does not need to be tested again. In terms of toxicity, it has also reached the top level, and there is no way to break through it, and there is nothing else to strengthen in other characteristics, so let's give it up for the time being. But the bees, obviously there is still a lot to be strengthened.

"Let the bees have the toxicity of the tiger bee." Shi Lei decided to add an insurance measure to his mountain and valley. These beehives were originally placed on the surrounding hills by Shi Lei, and they existed as a line of defense, in a few places around that were not so steep. These are all possible locations for the enemy to attack from behind.

For this reason, the dealers changed the location of the outposts. No one wants to have a large number of bombers on their heads and observe them, especially if they don't do it well, they will be stung all over their heads.

Shi Lei consumed two opportunities for transformation, and raised the toxicity of these bees to the limit at one time, and even broke through the limit of bees and reached the level of wasps, and it was impossible to be stronger. These little guys, like flying poison darts, patrol their respective territories, and at the same time ensure the safety of the valley.

During the period when Shi Lei adapted to the breakthrough of strength, he had accumulated a lot of energy for transformation, and after transforming these little guys, it didn't take a few days in total. With enough energy, Shi Lei can naturally be a little willful and experiment with more transformation directions.

What needs to be considered is the gold-eating ants that are very precious to Shi Lei. Their formic acid can no longer be transformed, which makes Shi Lei very disappointed. However, the ability to dig gold is not all focused on formic acid, after all, it is just a link, so there are still places where Shi Lei can transform.

The strength and digestion of the gold-eating ants can be strengthened, and these small miners will be more motivated after the transformation. The big jaw, which is used to dig ore, has become stronger, and its entire body has become tighter.

A bright metallic sheen flows on the surface of the body. Today, they have become veritable copper peas. If you stop there, it's easy to see it as an ornament made of metal.

And it may be due to the impact of the enhancement of digestion, the amount of formic acid secretion has also increased significantly, plus they can lift heavier ores at a time, and the speed of natural gold collection has also accelerated a lot, which is a bit crooked.

Shi Lei felt that the study of these gold-eating ants had to be a little deeper, and Shi Lei had been curious about their various miracles for a long time.

Since they secreted a lot more formic acid, Shi Lei found a big wooden barrel with a lid, and went to each ant nest to collect some formic acid and bring it back for testing.

If Shi Lei's chemistry knowledge was not returned to the teacher, he would have been able to learn more about the characteristics of formic acid. It's a pity that the rules of this world are not exactly the same as in previous lives.

For example, chemical reactions such as gunpowder have changed a lot, so it is not possible to completely measure the things in this world from the perspective of the previous life. In that case, there would be no such magical creatures as gold-eating ants.

Carefully brought the seemingly small amount of formic acid to Uncle Blacksmith. These inconspicuous formic acids can be used as corpse water, and Shi Lei didn't plan to bury any parts of his body in them.

He is not a science maniac, and experiments are only to satisfy his curiosity, by the way, to see if he can develop some other uses, and he has no intention of dedicating himself to science.

The corrosive ability of these formic acids, naturally there is nothing to say, basically all kinds of metals that can be seen here by the blacksmith uncle have traces of corrosion, and the uncle who watched it twitched in his heart.

On the one hand, I am glad that I didn't rush to pick up the nest of these ants, which can be regarded as escaping. On the one hand, of course, I feel sorry for my own materials, and there are a lot of good things that I have collected with great difficulty.

For example, the piece in Shi Lei's hand has already appeared with a little beautiful natural pattern of meteorite iron, which is a rare material that can be found. He's counting on collecting enough of it to craft a sword that will last for generations.

Ancient swordsmiths were able to leave a great reputation, and many of them relied on a hand-me-down Xuantie sword. The horse-chopping sword in Shi Lei's hand can be handed down, and it is indispensable to the credit of meteorite raw materials.

In Shi Lei's mind, he was thinking about the application of this effect. Shi Lei in later generations can be regarded as a knife friend, but he doesn't have a lot of money, so there are not many cold weapons that he can really use. But he soaks in various cold weapon forums and post bars every day, at least he is still very rich in theoretical knowledge.

In addition, from time to time to participate in a gathering between knife friends, visit the cold weapon exhibition or something, the knowledge can be regarded as rich, compared to the blacksmith uncle whose consciousness is limited to this era, Shi Lei feels that he can still put forward some new ideas in some aspects.

For example, this kind of acid, Shi Lei's impression is that it is completely possible to achieve the effect of passivating the metal by pickling the metal. Forming a corrosion-resistant film on the surface of the metal, so that they can reduce the damage caused by rust, will naturally remain much longer.

However, considering the different rules of the world, this also needs to be verified.

The solution that Shi Lei thought of was also very simple. Find two small iron bars that are basically the same, one of them have been washed with ant acid, and the other will look duller than the other, and the other one is left untreated, and then put the two iron bars on the eaves of the blacksmith uncle.

The rainy and humid weather here in Yazhou, coupled with the temperature of spring all year round, is simply a nightmare for all metal utensils, and the maintenance of various weapons is also a headache.

If this test confirms the effect of formic acid, it will be the gospel of the blacksmith uncle. The reason why he is constantly busy is that he rarely makes new objects, and most of the time he is doing tinkering work. The self-proclaimed uncle of the master blacksmith is really fed up with such busyness.

If you want to see the results of the test, you have to wait, and I believe that it will not take a few days to see the results. The iron bars are exposed to the outside and don't rust too quickly.

Before verifying this, Shi Lei also wanted to try whether these formic acids had other properties. For example, the flammable and explosive products that Shi Lei will never forget.

Shi Lei, who has seen the power of overheated weapons, must be yearning for such a thing, this killing efficiency is not at the same order of magnitude as cold weapons.

Shi Lei found a long strip of dry wood, dipped it in a little formic acid, and then stood far away, stretched out to the edge of the stove and lit it.

There are all kinds of stoves here, which is really not a strange thing. Not to mention the coal stove used for striking iron, the briquette stove with a chimney that was the favorite of the predecessors has also appeared a long time ago, so Shi Lei always felt that there were predecessors in this world.

Shi Lei cautiously stared at the situation on the other end of the wooden bar, wanting to observe the burning situation, and at the same time, he was also ready to jump away at any time. If the formic acid collapses, you will suffer everywhere.

The sound of "poof" is similar to the sound of a match being lit, and the firewood that usually takes a while to burn will burn the moment it touches the flame.

Needless to say, this must be the effect of formic acid, which is indeed flammable. In order to confirm this, Shi Lei also tested it with some formic acid dipped in iron bars, but the results still did not disappoint Shi Lei.

This is a great discovery, Shi Lei, who was a little impatient, immediately found a small glass bottle, with the help of a funnel and a wooden spoon, poured formic acid into it, and then stuffed a strip of cloth stained with kerosene, and a ****** in Shi Lei's impression was ready.

Called the blacksmith uncle, who was also curious, and ran to the martial arts training ground with a large enough area, Shi Lei lit the cloth strip, and then smashed the bottle into the middle of the martial arts training ground.

In an instant, the ferocious fire covered a large area of flat land, and without any combustibles, it still burned for a while before it was extinguished.

Shi Lei felt that he was surrounded by a strong sense of happiness.