Looking at Xi's cold face, Du Yuqi was very surprised. In the end, he could only shake his head and smile bitterly:

"Why are you here? The teleportation array has run out of uses!"

Xi snorted coldly:

"I'm just curious about how strong those Crazy Ivans are! Don't worry, she just said that the teleportation array is not safe for the next transmission, not necessarily that it can't be used. She said very clearly that there is still a 60% chance of successful transmission, and the teleportation function will not be lost until the teleportation array is completely destroyed."

Du Yuqi said anxiously:

"But you can't gamble. What if you encounter that 40% chance of failure?! Oh!! For now, the only solution is for you to use the last reliable teleportation opportunity to leave. Then I will cancel the summoning contract and return directly to Earth, waiting for Changmei and Holmes to summon you again. However, if this is done, I don't know how much time it will take. Without me, you must be careful. This place is really too weird."

Xi glanced at Du Yuqi and said calmly:

"Am I such a reckless person? Even if the transmission fails, I still have ways to protect myself."

Du Yuqi was surprised:

"How can you protect yourself?"

Xi glanced at him, and seemed a little reluctant to speak, but finally said:

"My teacher gave me something. With this thing, ordinary Jedi can't trap me. So even if the teleportation array fails, I can still leave successfully."

Du Yuqi was stunned and said:

"I don't believe it, you are lying to me!"

Xi rolled her eyes at him, really took something out, and said:

"This item is called Dimension Boots. After using it, you can instantly teleport to a random location one thousand meters away. And it must be on the ground, not in the air or in rocks or soil. According to the teacher, this is the latest invention of the Alchemist Guild. It is still in the research and development stage and is not for sale at all. This item is made by referring to the teleportation potion and the teleportation principle of the male mage's skill. It only has one last use left. It will break directly after use."

Du Yuqi checked carefully and saw his cautious look. Although Xi said nothing on the surface, he felt a warm feeling in his heart. However, Du Yuqi frowned and said:

"When did you meet the teacher? Did he do anything bad to you?"

Du Yuqi could only vaguely guess some truths about the relationship between Xi and Feng Lin, but he was certain that the truth would hurt Xi very much, so if he had a choice, he would not let Xi be kept in the dark.

However, after Du Yuqi asked this question, he realized that he was too concerned. Why did Feng Lin show up? There was no doubt that it was related to Xi's recent step-by-step improvement in strength!

The reason why Xi's strength increased step by step was naturally because of the mutated Terra Stone given to her by Du Yuqi. It is no exaggeration to say that the powerful apostle power in the mutated Terra Stone can transform a person completely. Xi did not get such an exaggerated improvement, but the increase in strength was also very obvious.

Considering that Feng Lin would give Xi a typical life-saving precious item like the Dimension Boots, it is almost certain that Feng Lin is very satisfied with Xi's improvement in strength this time. He must have benefited from it, so he showed such an obvious tendency.

Facing Du Yuqi's question, Xi did not answer, but said simply:

"The vibration and buzzing sound down there is getting stronger and stronger. I'm not feeling well either. How long are you going to drag it out?"

Du Yuqi nodded, and then together with Xi, they headed deeper into the laboratory. Every few steps, they could see the red light of the warning device flashing, and could also faintly hear a fuzzy electronic synthesized voice. At first, it was too far away to hear clearly, but when they got closer, they could hear it clearly. After hearing it clearly, Du Yuqi was immediately delighted, because the electronic synthesized voice said:

"Warning, warning, energy supply is insufficient, backup energy is about to be activated!"

"Warning, warning, the backup energy is insufficient, and it is about to enter a dormant state. All related facilities in the laboratory are about to be shut down! Please prepare!"

“…”

Obviously, this is great news. According to what Changmei and others said before, Crazy Ivan is actually a mechanical transformation body. The stronger the power it explodes, the more energy it actually consumes! And they are also part of the protection sequence inside the laboratory, so the lack of energy inside the laboratory means that they will definitely lose the ability to continue fighting!

It's a pity that the mysterious buzzing sound coming from underground at this time makes people uneasy. Time can't be delayed. Otherwise, if we wait two or three days before coming in, the difficulty should be much lower. But now it can be regarded as good news.

Now that Xi has come in, Du Yuqi is not in a hurry to summon Jet. After all, it costs money to summon him, and after summoning this follower, he must be summoned out again. This back and forth will cost two Holy Crowns. It is too troublesome to save this thing, and it has a wide range of uses, so save as much as possible.

The two of them walked forward with light steps. Since they had been here once before, they were familiar with the large experimental room where the warehouse was located. After arriving here, Du Yuqi became more cautious in his actions, because he had seen two Crazy Ivans standing in the corner with their heads down and not moving from a distance. If he looked carefully, he found that the rest of the Crazy Ivans had gathered in the guard rooms on the left and right of the warehouse gate, and no one knew what they were doing.

It can be seen from the absence of flames that this terrifying war weapon is indeed a living modification of goblins, but it is only similar in appearance. If you look closely, their joints have obviously been strengthened and replaced with metal joints, and the chest also has a metal texture, which should have been replaced with a metal sternum.

Because Holmes once mentioned that Crazy Ivan could also burst out with amazing speed in the final stage of self-destruction, Du Yuqi also carefully observed their legs and found two small holes at the heel position. According to Du Yuqi's speculation, this is probably the secret of its sudden increase in speed. All the energy is converted into the device on the foot to form a device like a jet thruster, which bursts out amazing mobility.

After telling Xi the details she had observed, Xi also told Du Yuqi about her own discovery, which was that she had discovered the secret of Crazy Ivan's high-temperature barrier, which was located on his hands. There was a strange magic circle engraved on both of Crazy Ivan's palms. When the two palms were close, or when the palms were facing each other, this strange magic circle would be activated, and then a high-temperature barrier would be generated by consuming energy!

Both of these discoveries are very important. Specifically, Du Yuqi and the other person can now do some very targeted things during the battle. For example, if they want to quickly make the high-temperature barrier disappear, they can just cut off or even injure their palms!

The best way to restrain Crazy Ivan's final counterattack and self-destruction is to attack their heels and destroy their jet propulsion devices. Once they can't catch up with you, no matter how powerful their self-destruction is, it will be useless.

The two wanted to continue observing, but they were on the second underground floor at this time, so they felt the strange buzzing sound coming from underground more directly and clearly. They also found that the buzzing sound was mixed with one or two sharp sounds, similar to a whistle, which made people feel more frightened after hearing it.

Du Yuqi even had a vague guess at this time. Maybe there were some secrets hidden deep in this abandoned laboratory, which had just been activated. After all, this was a test site built by the empire with the whole country's strength. Hundreds of years was not too long for this place, and it was far from being completely abandoned.

Therefore, he was not willing to delay any longer at this time. After greeting Xi, he let Xi take the lead in attacking.

At this time, Xi's first move was naturally the Thunder Dragon Out to Sea. This move had a long attack range and amazing power, and Xi used it very smoothly. The dragon of light rushed out in an instant, swept away the two Crazy Ivans leaning against the wall, and smashed them away, and then... they broke into pieces like porcelain, and some disgusting yellow-green liquid flowed out on the ground.