It was a very inconspicuous black stone. It was said to be a stone, but it had a metallic luster.

The reason why Lin Feng had this expression was because he felt a kind of energy fluctuation from this stone.

This kind of fluctuation is not an ordinary energy fluctuation, but the same as the energy fluctuation in the ball that he encountered in the cave where the three blood bats brought him to the surface world.

It was precisely because of absorbing this energy that Lin Feng was able to raise a level 5 practitioner to level 7 all at once.

However, the energy fluctuations on this black stone are not very strong, but they always remain there.

And from the material point of view, this stone is very similar to Lin Feng's black iron bayonet. If I didn't guess wrong, it should be a piece of dark iron ore.

With such a discovery, Lin Feng did not reveal it. After pretending to look at the weapons on the wall for a long time, Lin Feng turned around.

"I want to build a saddle."

Looking at the burly man, Lin Feng said.

The reason why he had this idea was because Lin Feng had seen that the little silver wolf in the doomsday table had grown up. And if he can communicate well with Little Silver Wolf, he will be a very good mount.

Although there are cars in the last days, there are places where cars cannot pass, such as deep forests and mountains. If not, it will take a lot of time to cross some mountains. If there is a mount like the little silver wolf, the speed of movement will be greatly improved.

Little Silver Wolf's strength is unquestionable, not much different from his Lin Feng. Although after he reached level 8 cultivator, I don't know how strong Little Silver Wolf is. But Lin Feng knew. If it was the previous Silver Wolf, Lin Feng, a level 8 practitioner, might not be an opponent.

This shows that if the little silver wolf really grows up, he will be a right-hand man. And can ride. In this way, kill two birds with one stone.

"Okay, five hundred copper kura."

Originally thinking that Lin Feng needed some kind of weapon, the burly man was still looking forward to it. But after hearing that Lin Feng only needed a pair of saddles, the big man was a little disappointed.

Unlike weapons such as pieces that require continuous forging, the process of making saddles is not very complicated, so the asking price is not high. He doesn't make much money. Therefore, the burly man was a little disappointed.

"I'll give you double the price, and I'll ask for it tomorrow."

Staring at the burly man in front of him, Lin Feng said.

After hearing Lin Feng's words, the burly man's eyes lit up. The double price is a thousand copper kula, so he can earn more.

It costs five hundred copper kula to make a saddle, but a big man can earn one hundred copper kula. Although the profit is not much in this case, it can also earn some. If Lin Feng was given one thousand copper kula, then he could earn six hundred. In this way, it is the profit of building two weapons.

Making a saddle is faster than a weapon, and the process is not complicated, but it is less profitable. But now, in the case of saving time and effort, he can earn money to build two weapons. There are such profits. The big man's saliva was about to flow down.

"By the way, there is one more thing. There is a stone missing in my pickles. Just now I saw that the stone in your corner is very heavy, and it is just right for you. See if you can give me that black stone."

Seeing the surprised look on the big man's face, Lin Feng said casually.

Lin Feng didn't know whether the other party would like the stone, but seeing that it was only placed in the corner, it proved that it was not very important. The reason why he pretended to be casual was that he didn't want to attract the attention of the burly man.

"This...well. The right is for you."

Hearing what Lin Feng said, the burly man hesitated, but then he agreed to Lin Feng.

This stone was collected by him for a hundred copper kula, but one person can make a good weapon.

But in actual operation, the burly man found that he couldn't melt it anyway. After trying many times, he couldn't bear it and finally gave up.

That black stone has been there for many years, if Lin Feng hadn't mentioned it, he would have really forgotten about it.

But even though it was collected for a hundred copper kula, it was really useless. What's more, apart from Lin Feng's one thousand copper kula for building a saddle, he can earn six hundred. Even if the one hundred is removed, the profit is quite considerable. The big man didn't want to ruin a big list because of this useless stone.

After briefly describing the shape of the saddle he needed, after paying the deposit, Lin Feng left the blacksmith's shop with the black stone the size of a human head in his arms.

As soon as he left the blacksmith shop, Lin Feng received the black stone into the end-time watch.

Although this black stone said that Lin Feng didn't know how to use it, his perception told him that this thing might be useful. Anyway, now that Lin Feng also has money from the underground world, it's no big deal to accept this stone.

Later, Lin Feng found an inn and stayed there after paying the rent.

After a brief understanding of the underground world, Lin Feng found that he was almost the same as the ancient in his previous life.

There is nothing too high-tech in the entire underground world, and people are still in the era of cold weapons. Even the means of transportation are limited to things like horse-drawn carriages.

For thousands of years, the technology of the surface world has been very advanced. People's wisdom has greatly improved the living standards of the world. If it hadn't experienced the end of the world, the surface world should be very prosperous now.

It is precisely because of a disaster a thousand years ago that the underground world was formed.

Human beings survived and multiplied in the underground world because of the problem of materials and some resources at the beginning. As a result, the technological advancement of the underground world is very slow, or even stagnant.

In the beginning, the underground world didn't even have trees. It was precisely because of the ten-year preparation that people put some plant seeds into the underground world. In addition, there are creatures of poultry and livestock.

Because of this, there are crops and plants growing in the underground world now. Animal husbandry has developed well in the underground world after thousands of years.

With these resources, human beings can live with food and clothing in the underground world. But as for technology, it has been kept at the level of thousands of years ago.

In this world, although it is not as barren as the last days, it is still dominated by the strong. A strong person is a powerful existence no matter where he is in the underground world, and he is also admired by people.

Most of the strong men in the underground world come from various martial arts schools. The Nia Martial Arts Academy is located in the center of Nia City.

The next morning, Lin Feng got up early. Because today is the day when Nia Martial Arts Academy enrolls students. (To be continued.)