In these thirty days, they killed hundreds of wild beasts. Among them, there were more than twenty of them, and the fifteenth-ranked Black Shadow Python and the fourteenth-ranked Bone Spur Rhino all died under their hands. As for other unknown creatures, that's even more.

Thirty days is not a long time, but for the two who experienced the bloody killing, it feels like a world apart. Their strength is much stronger than before, especially Chen Duan, who has improved more rapidly in all aspects. In the Federation, there are not many battles that require his personal involvement. And in Baiyuan, every day is a high-intensity battle, only the most ** killing and life and death.

After thirty days of tempering, he was like a different person, reborn.

"I'm running out of energy cards." Chen Du frowned. These days are constantly fighting, and the consumption of energy cards is extremely high. Fortunately, he is usually used to a large number of energy cards, otherwise, he would not be able to hold out now. If the energy card is depleted, his combat power will drop sharply. His attainments in cardless flow are still good for dealing with ordinary Kaxiu, but it is much worse for dealing with these fierce beasts.

The movement of the devil woman's hand froze, and then returned to normal: "Then what should I do?" ”

Chen Dui, who had a headache, took out all the contents of his waist bag. [Weak water] pens, a number of various cards, money cards, etc., and a few small mud blocks are scattered around. Money cards are worthless here. As for the other cards, if there are no energy cards, they are just a pile of waste paper.

His eyes fell on those few small black clay blocks, and he was immediately overjoyed, how could he forget these little things?

Picking up a small block of mud in his hand, he carefully pinched the outer layer of black mud, and a strong energy fluctuation impacted Chen Dui's perceptual world.

Strong energy fluctuations are coming!

Chen Du looked at these sapphire-like crystals with surprise and delight. He was much more knowledgeable now than before, and although he didn't know what these sapphire crystals were, he could roughly tell what they were. This is a crystal with a fairly high energy content, and the energy density it contains far exceeds that of other energy-rich ores that Chen Du has ever seen. Like the more common, the moon stone used to make energy cards contains less than a fraction of its energy.

But despite this, he was faced with a lack of materials. First of all, he needed blank cards, and the key point was that tanning blank cards was also a technique that required many processes, which he obviously couldn't do now. Secondly, he needed a lot of auxiliary materials to process this unknown energy crystal.

Fortunately, Chen Du is not a rigid person and knows how to adapt measures to local conditions. He hadn't thrown away all the energy cards he had used up before, and now he only needed to clean them up and dispose of them. And there are many cards in his card bag that he doesn't need, and these cards are all wasted by him and all refreshed.

As for the problem of other materials, he had to solve it head-on. To do this, he had to re-search the area where he had been active for the past thirty days, and he would inspect every creature and ore here. Without any detection equipment, without any other processing tools, without valid cards, he had to resort to the most primitive means - his perception!

Using his senses, he scanned any material he hadn't seen before, hoping to judge their microstructure by their microstructure.

What Chen Du didn't know was that no one had ever used perception like this. And if Nishizawa knew that he was doing this with the Zero state, he would be dumbfounded.

In order to be able to distinguish the microstructure of the material, he had to use his perception to the extreme, especially in terms of fineness. The scope of their activities in the past thirty days was not large, but the various materials that Chen Du felt unfamiliar with in this range were not a small number.

Plants, ores, biological tissues...... All of this is within the scope of his investigation. If you change people, you will definitely refuse to start with such a basic work, because this is really a huge project. However, Chen Du did not hesitate to choose this seemingly the most laborious method.

Who knows how long they will stay in this ghost place, these tasks seem tedious, but every time they do a little more, they are more likely to survive in Baiyuan.

For thirty days, he couldn't remember exactly how many battles he had been through. There are many battles, and he has a high probability of becoming a corpse, and surviving is quite a bit of luck. However, one cannot put one's hopes in luck. He felt the difficulty of surviving in this place.

He considered it necessary to prepare for a long battle. And these preparations are also the basis for their long-term fighting.

For this reason, they had to slow down. Chen Dui desperately used his perception every day to examine the materials. I don't know if he has used it too much, but his perceptual refinement has improved quite rapidly, and he has become more and more proficient in this method of identifying materials that has not been recorded in any textbook.

After several brushes with death, his Zero state has also undergone a qualitative change, and he can now be in the Zero state at any time without any discomfort. The white lines also changed, so faint that they were almost invisible, hidden in the color vision, but he could easily and clearly feel these hard-to-see lines. Whenever there is danger, he can always detect it one step ahead, which allows him to avoid many dangers.

Under the pressure of death, the combination of the [One Breath Perception Exercise] and Deep Tranquility exerted an amazing power, and his perception changed almost every day.

Life is boring, every day is fighting, checking materials. The devil girl seems to be used to this kind of life, and she is usually silent. But the tacit understanding between the two in the battle has become more and more familiar, and the power of joining forces has also increased greatly.

Chen Dui was carefully collecting the poison powder from the fallen pink poison moth. The pink poison moth is quite large, with its wings spread out and more than 25 centimeters long, and its body is brightly colored, especially its wings, which resemble two rainbows. It does not fly very fast, but generates a colored poisonous area around its body. Any creature that intrudes into this area will be poisoned in the first place.

It's an extremely dangerous animal, but it's not a hassle for Chen. With the help of the [Bipolar Card], he easily killed the pink poison painted moth. According to Devil Girl, the colored poison powder on the Pink Poison Moth is a very useful material that many tribes buy at a high price, mainly for weapons.

This made Chen Du very curious about it, and deliberately collected the poison powder on its body. The various creatures in this area were almost swept away by the two of them, and even the bone spur rhinoceros, which was so powerful that the devil girl didn't dare to think about it, was grinded to death by the two of them. And now, as soon as the group of shadow bees saw the two of them, they turned around and ran, which made Chen Du greatly amazed at the wisdom of these little creatures.

"Ha, this poisonous powder is really a good thing!" Chen Du couldn't help but shout in surprise.

The materials he collected were only missing a catalyst, but he didn't expect this poison powder to be a natural catalyst.

The devil girl looked at the overjoyed Chen Dui, and her heart was a little flustered. The speed and magnitude of his progress is truly appalling! When he first arrived, Chen Dui's strength was not as good as hers, but almost every time he experienced a battle, his strength increased by one point. After more than a dozen battles, the gap between the two was comparable. However, his momentum has shown no signs of failing, and now he has become the main attacker of the two.

She had never seen such a tough character! Is the talent strong? Or does he have the potential to be far superior to the ordinary?

Her strength is also increasing rapidly, but compared to him, it is a little discouraged, and this is after she has the Celestial Star Vine.

After killing the fifteenth-ranked Black Shadow Python and the fourteenth-ranked Bone Spur Rhino in a row, she suddenly felt that maybe they could really get out of the abyss.

After collecting the poison powder, Chen Du had already beckoned her back to the camp, and he couldn't wait.

The camp was rudimentary, just a sheltered hollow, sprinkled with the urine and hair of some powerful beasts, so as to prevent other beasts from breaking into the camp. The camp was warm because of the fire pit. However, in this simple fire pit, it was not wood that was burned, but a pale red stone. This pale red stone Chen Duan had not seen before, but knew that it was an incomplete power stone. At the beginning, I regretted that this pale red stone did not contain much energy and could not be used to make energy cards. But then he had an idea, and he simply tried to use it for warmth.

Unexpectedly, it is an excellent combustion material, which is not only smokeless, stable in heat, but also extremely resistant to burning. The devil girl's eyes were round at that time, and she didn't know until she asked her later. It is a fairly common stone, called red iris in Baiyuan Province, but no one would think of using it as a burning material.

The red iris in the fire pit exuded warm heat, flickering and dimming, reflecting Chen Dui's face also flickering and dimming, and his face was unusually focused.

In front of him, there were many strange things. There are various stones, plant tubers, unknown wild fruits, and the blood of animals...... He began to process the materials, and he had already drawn up a plan, so he moved extremely quickly and did not hesitate. The Devil Girl looked at Chen Du curiously, she had never seen a card maker make cards. She has been in the Federation for a long time and has a certain understanding of many things in the Federation. And she knew what the energy cards meant to them.

If it weren't for Chen Dui, the main attacker, she would never have been able to get out of the abyss alone!

It made her a little nervous.

Chen Dui's expression was calm and focused, and his movements were neat and methodical. It's hard to imagine that he's making cards from unfamiliar materials, and if someone who doesn't know sees him for the first time, they'll think he's done it many times.

The materials were changing in his hands, and all kinds of phenomena that made the devil woman stunned were endless.

The whole process takes about four hours.

For four hours, Chen Dui's gaze did not shift in the slightest, and he remained firmly fixed on the simple and primitive container in front of him.

And the final product is the three cards that he just finished in front of him!

(To be continued)