In the Overworld, there is talk of preventing the expansion of deserts.

Forests are the object of great protection.

Human beings are only worried that its area is too small, and they are only worried that its expansion is too slow, how can there be such a thing as "preventing expansion".

But Wolf City is a completely different story.

Due to the superior natural conditions, all plants grow rapidly.

Trees have well-developed root systems, and how big a tree will have as big a root.

As long as the water supply is sufficient, the roots of the tree will always extend to the surrounding area, and new saplings will grow on the roots.

In this way, the forest will definitely continue to expand outward.

If left unchecked, forests will gradually encroach on grasslands, gradually shrinking the grassland area.

If everything goes according to nature, after a long time, the wolf domain will be completely covered by forests, and the wolf people and nomads will lose the grassland pastures on which they depend.

Therefore, it is necessary for the wolf domain to prevent the expansion of the forest.

This was the first thing Cheng Zhong thought about after entering the wolf domain, and for this reason, he was in a good mood.

He stammered and explained in Wusun for a long time, and finally made Bullari understand the reason......

Bulari approached the Pegasus, removed the bow, quiver, and water bladder from the horse, untied the saddle cage for the horse, and waved it away.

"Pegasus" raised his head and hissed, as if to say goodbye to everyone.

Then, I saw it leap to its feet, fly over the trench, and rush to the grassland with ease and pleasure, where it grazes freely and roams freely.

Brulari was gone.

She ran into the forest, found a secret place, and hid the horse's saddle cage for the time being.

After returning to Cheng Zhong's side, she skillfully carried the bow and arrow and the water bladder, and walked forward with a pair of straight and long legs.

Cheng Zhong and the White Dragon Dog trotting followed.

Bulally led a man and a dog towards the hunting grounds.

Before setting off in the morning, Cheng Zhong searched for a long time in the tribe's arsenal, but did not find the weapon he had.

In the arsenal, there are many stone knives, stone axes, and stone spears, which are not sharp and very bulky.

I went hunting with such a weapon, but I didn't wait for the location, but I was afraid that I would be tired and picked it up.

There are also large and small bows and arrows, but Cheng Zhong will not use them.

In the end, in desperation, he carried an eight-foot-long whistle stick before leaving.

The whistle stick is made of wood, which is very tough and relatively lightweight.

Cheng Zhong thought that it could be used as a weapon, and when climbing a mountain, it could also be used as a crutch.

"What wild things are in this forest?" asked Cheng Zhong as he walked.

"This forest is so big that there are all kinds of wild things.

The people of the wolf domain, except for special needs, generally do not go hunting, because the supply of meat in the tribe is abundant.

Let's come out today, I think it's best to hit the male incense deer. ”

Bullali looked back.

"Why do you specialize in male incense deer?"

Cheng Zhong caught up, walked side by side with Brulali, and asked casually.

"It's the kind of roe deer that has musk on its body, and it's very valuable. ”

"Oh, roe deer, musk. ”

Cheng Zhong repeated these two words in his mouth and memorized them in his head.

Truth be told, he asked to go out hunting, not to hunt for anything, but to take the opportunity to learn more about the world while continuing to learn the Usun language.

Along the edge of the forest, Cheng Zhong and the others walked forward unhurriedly.

But the white dragon dog did not stop.

It rushes to the front, falls behind, and then probes into the gloomy forest.

It didn't take long for the white dragon dog to have a harvest.

It came out of the dense forest, and it had a quail in its mouth, which weighed more than fifteen pounds.

It sprang out of the space between Cheng Zhong and Brulari's body, shaking its prey in its mouth in high spirits.

Cheng Zhong took the prey calmly and said to it in "wolf language":

"Bailongda, don't bother to catch these things, we still have to climb the mountain, these things can't be carried at all." ”

Brulali's eyes widened in surprise again when she heard Cheng Zhong's wolf words.

"Got it!"

The white dragon dog failed to invite the merit, and he was a little unhappy in his heart, and rolled his eyes and agreed.

"Hey, Brularie, let's just burn this quail first, and eat it before we leave. ”

Cheng Zhong discussed loudly with the beauty.

When I got up in the morning, Cheng Zhong only drank half a can of milk tea, and the white dragon dog only drank goat's milk to the sheepdog, and their stomachs were already a little hungry.

"I'm sorry, little brother, are you hungry?

We Wusun people only eat one meal a day and are used to it.

I forgot that you are not from Wusun, and I blame me for not being thoughtful!"

Brulari apologized again and again.

"Alright, it's okay! Haha, don't we have something to eat. ”

Cheng Zhong said with a laugh.

Dry branches were visible at the edge of the forest, and they quickly pulled a large pile of dry branches.

Cheng Zhong and Brulari took out the ignition tool from their personal body at the same time.

They made "huh" and "huh" sounds almost at the same time, and looked at each other's tools in amazement.

In Bellali's hand is a two-inch-sized, oblate and round Nanmu box.

A small hole is made in one side of the box, revealing a thin leather rope, and the other side is hollowed out into a beautiful lattice.

Cheng Zhong took the Nanmu box and observed it carefully.

He caught a glimpse of the string and tried to pull it.

Just listening to the soft sound of "hum", a wisp of sparks erupted from the hollow side of the Nanmu box.

This is the most delicate gadget that Cheng Zhong saw after entering the Wusun tribe.

It is made using the principle of drilling wood for fire.

Pull the rope, drive the mechanism in the box, and through the transmission of force, the hardwood skewers in the erection box quickly drill into the cork base in the lower part, and the fine wood chips with very low ignition points next to them will become sparks and spray out.

Instead of brimstone, wood was drilled into a two-inch wooden box to make a fire, and I had never heard of anyone in the Overworld doing it.

"This thing is so delicate!" Cheng Zhong said with sincere admiration.

It can also be seen from this ingenious gadget that the Wusun people also have intelligence that cannot be underestimated.

It's just that for some special reason, it limits the use of their ingenuity.

"What is the reason?"

Cheng Zhong took this question and instantly fell into deep thought.

At this time, Brulari fiddled with the fire sickle and flint that had become a bell in her hand.

She also thought it was strange.

What she felt strange was not the tool itself, but the material of the fire sickle.

This fire sickle is three inches long, black all over, and in the hand, it is a little heavy and a little cold.

Although the shape of the fire scythe was inconspicuous, the material used to create the fire scythe was something she had never seen before.

"Iron", in her already fifty-year-old mind, there is absolutely no concept.

"What kind of material is this thing made of?"

Holding the old fire sickle in her hand, Brulari asked Cheng Zhong a question.

"It's made of 'iron', which is extracted from ore. ”

Cheng Zhong replied honestly according to what he knew.

Because there is no word "iron" in Wusun language, Cheng Zhong directly used the Chinese word.

"'Iron', 'Iron'......"

Brulari muttered the fresh idiotish word.

Cheng Zhong looked at her from the sidelines and didn't say a word.

Suddenly, a flash of lightning crossed Cheng Zhong's mind, and in an instant, he realized something very important.

"Everything is because of this 'iron'. Cheng Zhong thought.

Through his understanding in the past two days, and by observing Brulari's reaction when she saw "iron" just now, he has concluded that there is no iron in this world at all, and there is no metal similar to iron at all.

Because of the absence of iron and metal, no matter how clever human beings are, the tools they make can only stay at the level of stone, wood, and pottery, and they can never take a step forward.

Without "iron" and all kinds of metal materials, what industry, what science and technology, what economic development, what social progress, all this is impossible to talk about.

"It's amazing, this must be a special design of the gods. Cheng Zhong thought.

A normal world should include five substances: metal, wood, earth, water, and fire.

This is something that the clever ancient Chinese have long discovered.

"Erlang God" and "Roaring Sky Dog", two immortals with the ability to penetrate the heavens and the earth and change the heavens and the earth, I don't know what means were used to extract or delete the "gold" in this world.

It is for this reason that the development of the entire human race in the wolf city has come to a standstill.

Without the material carrier of metal, human wisdom cannot occupy the commanding heights of the world, and the so-called "man is the spirit of all things" in the main world has become an empty phrase here.

In this way, it is possible for wolves to be in a dominant position in this world all the time.

Only in this way can the wolf domain truly live up to its name.

"Erlang God and Roaring Sky Dog are really the gods of heaven and earth creation!"

At this moment, Cheng Zhong's admiration for the two immortals reached an unsurpassed level.

"But is it a good thing or a bad thing for humanity that they do this?"

For this point, Cheng Zhong feels that he still needs to think slowly.