The reason why Lin Feng was surprised was because he felt that there were energy fluctuations in this cloth bag.

What the middle-aged man handed Lin Feng must have been the money of this underground world, which was the so-called Kula. But there was energy in the kula, which Lin Feng had never thought of.

The currency in the surface world is crystals, and crystals are produced in zombie brains, and it is understandable that they contain energy. Because zombies need this energy to survive, and the more advanced the zombies, the higher the energy contained in the crystals.

But there should be no zombies in this underground world, but there can be energy in the currency, which is incredible.

However, Lin Feng didn't show it here, maybe the currency of this underground world contained energy was a well-known thing. If he was surprised, there must be something wrong. Lin Feng didn't say much at the moment, opened the cloth bag and pretended to check it, and then left the consignment shop.

Lin Feng, who walked out of the consignment shop, opened the cloth bag and saw that the kula inside was a metal sheet, which was named with different currency grades depending on the color. And they have strange patterns on them, and there is a portrait of Agoura on the back.

None of this was important, the important thing was that Lin Feng found that it was the one who emitted the energy fluctuations.

The currency of this world is one to one, one silver cura can be exchanged for a hundred copper cura, and one gold cura can be exchanged for a hundred silver kula. However, Lin Feng felt that there were no energy fluctuations in the copper kula and silver kula, and the only one that had already produced energy fluctuations was the gold kula.

Picking up the gold cura in the bag, Lin Feng carefully observed the gold cura in his hand, and found that it was a metal that Lin Feng had never seen before, but it was not gold, but its own color was golden yellow.

Feeling the energy in it, Lin Feng found that it was similar to the energy of the light-colored citrine produced by the second-level zombies. Although it is said that there is energy in it, it is not much for Lin Feng.

Feeling the energy in it, Lin Feng tried to absorb it. Strange things happened, the energy in the Vault was actually able to be transmitted directly into his body through Lin Feng's hands.

And after Lin Feng absorbed this energy from the Vault. The vault in his hand shattered into countless pieces at once, apparently scrapped.

Seeing this effect, Lin Feng was overjoyed. Now no matter how much he absorbs the light-colored citrine, he can't give him an energy boost, but this Gym. But it was able to transmit energy to Lin Feng's body.

Hurriedly taking out the Doomsday Table, Lin Feng found that in this underground world, the network function of the Doomsday Table was no longer there. This was not out of Lin Feng's expectations, it was impossible for the rock layer of more than a thousand meters to transmit the signal here, and there was also a shield layer of one hundred meters.

If the signal could be transmitted here, then this underground world would have been discovered by humans on the surface long ago. Nor can it be delayed until today, a thousand years from now.

But the combat power index on the apocalyptic table is still easy to use, although it is said that he can't see the combat power ranking, but Lin Feng can see that its current combat power has reached 19840.

Lin Feng's combat power index was 19,800 before, and it has remained there unchanged, and the combat strength of 20,000 is only 200 points of the bottleneck.

But after entering here, because he was able to gradually absorb the energy of the sun in the sky, and the energy that the statue of Agoura had tried to pass on Lin Feng's body before, he remembered that it was almost thirty points. And after absorbing this Vaulta just now, Lin Feng's combat power increased by ten points.

Lin Feng was now at the bottleneck stage of a level 7 cultivator, and if he could break through this bottleneck, he would be able to reach level 8 cultivator.

But this bottleneck is difficult to raise. No matter how he absorbed the crystals produced by the zombies, Lin Feng couldn't get energy from them, and he didn't expect that in this underground world, he would increase his combat power by forty points in less than two hours.

If he continued like this, or collected some more Vaults, Lin Feng would most likely be able to quickly rise to level 8 cultivator. At that time, he will become a real powerhouse.

In the surface world, Lin Feng had never seen a cultivator above level 8 appear. Yang Tianlong was the most powerful cultivator he had ever seen, and if it weren't for that, he wouldn't have been able to jump off the cliff.

And in this underground world. Lin Feng saw the four powerful beings whose strength he couldn't detect. In this way, Lin Feng, who originally felt that his strength was okay, suddenly felt a sense of oppression.

If those four people were enemies of Lin Feng, she would probably die here today. Fortunately, the other party just wanted to prevent the people here from going out, and did not hurt Lin Feng.

But despite this. Lin Feng's heart became more and more anxious to become stronger. However, fortunately, Lin Feng had already found this way to break the bottleneck, and I believed that in the near future, he would definitely become a level 8 cultivator.

Before that, he needed to understand the situation in this underground world. He couldn't move around rashly, although except for the four unfathomable guards before, Lin Feng hadn't seen anyone stronger than him appear. But in a strange place. It is still necessary to be cautious, who knows when a strong man will emerge. If you don't even know the basics of this underground world, there is a high chance that unknown dangers will occur.

The current Lin Feng has money worth one gold kula, and if it is exchanged for copper kula, it will be ten thousand, which is already a lot of money for Lin Feng who has just arrived in the underground world. Before, he knew that a bun was worth a copper kula, and the money was still enough for him to spend for a while.

Now Lin Feng felt that his jade bracelet was sold cheaply, this was originally an underground world, rich in minerals. And the price of jadeite is not expensive here.

If according to the general algorithm, one bun is one copper kula, then the price of the bracelet should be 80,000 copper kula, that is, eight gold kula. And the middle-aged man only gave Lin Feng two gold cura, which illustrates two problems.

If it weren't for the middle-aged man Hei Lin Feng, it would be that the jade thing was not so valuable in the underground world, because the production was relatively large, and the price had shrunk a little.

I knew that Lin Feng would change to something else, but now that it was a fait accompli, Lin Feng had no choice.

Fortunately, the money was enough for Lin Feng, so in the next time, Lin Feng walked on the street to find a more lively place to learn about this underground world.

After walking for a while, Lin Feng found a restaurant, the plaque was a little dilapidated, but there were indeed a lot of people coming in and out.

At that moment, Lin Feng walked towards the small restaurant. (To be continued.) )