Two tiny figures were suspended in the room.

  One on the left and the other on the right, they were very close to each other, showing the special connection of being twins.

  The appearances of these two demonic servants were both humanoid. They were about the same size as Vinia's water spirit, both belonging to the miniature type. However, no one would doubt their power because of this.

  Perhaps because they were twins, their looks and postures seemed to be carved from the same mold, with little difference. Only the one on the left had a strong glow covering its body surface, while the one on the right seemed to be plunged into eternal darkness.

  "Are they Liuguang and Anying?"

  When Chen Yue clearly saw the appearances of the twin demonic servants he had summoned with great difficulty, he was stunned for a moment.

  The reason for his surprise was not their humanoid appearances or their similar looks, but that their bodies were a bit blurry, like two illusory shadows, hovering between the real and the unreal, completely not as solid as ordinary demonic servants after shaping their bodies.

  However, Chen Yue could clearly feel the rich life force on them, which couldn't be fake.

  "Uh." Yun Jing opened her True Vision Pupil and scanned them, then said somewhat uncertainly, "This form should be the complete form. If it seems to have no 实体，it should be related to their abilities."

  Chen Yue nodded knowingly, "It seems so."

  It was the first time he had seen demonic servants without a complete 实体. Their abilities should be very special.

  Thinking of this, a ripple arose in Chen Yue's heart. He tried to give them orders, but both demonic servants ignored him completely and remained motionless in place.

  He was stunned for a moment, but then, Chen Yue shook his head with a somewhat dumbfounded look on his face...

  The first ability of a demonic servant was innate and didn't need to be painstakingly explored. However, the two in front of him were just summoned demonic servants. To make them display their first ability, at least the compatibility had to break away from the "strange" level. Otherwise, they couldn't be commanded.

  In other places, it might take a lot of time to achieve this goal. However, in the trial ground, this process was greatly shortened.

  As long as they were demonic servants from the Spirit Realm, they would like the environment of the trial ground, and the improvement of compatibility would be much faster. Not to mention, to get rid of this completely strange state, only a little compatibility was needed.

  After Chen Yue handed over a few remaining life essences, the spiritual connection finally became unobstructed, which also meant that Chen Yue's orders could be received by them.

  Of course, since the compatibility had just broken away from the "strange" level and was still quite low at the moment, whether Chen Yue's orders would be firmly executed by them still depended on the situation.

  The process of them swallowing the life essences also opened Chen Yue's and Yun Jing's eyes. Although these two demonic servants had human-like appearances, their way of swallowing was nothing like humans at all.

  A piece of second-grade life essence was directly enveloped by the light and shadow on their body surfaces. After a while, the extremely solid life essence also became illusory. When it was completely transformed into a virtual body, it completely merged into their bodies.

  After swallowing several pieces of life essences one after another, both demonic servants showed a pleasant expression on their faces.

  "Almost done." Clapping his hands, Chen Yue gave an instruction to Liuguang, whose body surface was covered with light on the left.

  Liuguang was stunned for a moment, as if hesitating. But in the next moment, its whole body turned into a light that was between the illusory and the real and entered Chen Yue's body.

  Immediately after that, Chen Yue learned the name of Liuguang's first ability.

  "Light Escape."

  The moment Liuguang entered his body, Chen Yue felt that his whole body became warm and cozy. That feeling was like being in the gentle sunshine in winter, so comfortable that he didn't even want to move a little finger.

  Then, Chen Yue felt that he had become a ray of light.

  ...

  In the room, Yun Jing's big eyes suddenly widened, looking at the place where Chen Yue had been sitting in disbelief.

  "Chen Yue, he, how did he disappear?"

  In a daze, the little one said such a sentence.

  In fact, the moment Liuguang entered Chen Yue's body, Chen Yue's body disappeared, as if it had merged into the ubiquitous light around and there was no trace of his existence left.

  Even when the little one opened her True Vision Pupil, she couldn't find any trace of Chen Yue at all.

  "Impossible. How could this be possible?" Yun Jing was full of disbelief, but the fact was right in front of her. Chen Yue had disappeared in a special way.

  Of course, Chen Yue couldn't really cease to exist. After feeling that he had become light, he soon understood his current way of existence.

  Indeed, he no longer existed in his original human form. At this moment, he had really become a ray of light and merged into the surrounding light, completely indistinguishable from each other.

  So, even though Yun Jing opened her True Vision Pupil, she couldn't find Chen Yue, because although she could sense the difference between the light that Chen Yue had transformed into and the natural light, due to the change in the way of existence, Yun Jing naturally couldn't recognize it.

  "So that's it. This is the ability of Light Escape. It's really powerful."

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  Chen Yue looked a bit excited. If Light Escape was just ordinary invisibility, although it would still be outstanding, it wouldn't have moved Chen Yue so much.

  As far as Chen Yue knew, there were indeed demonic servants with the ability of invisibility. However, those methods were at most just tricks to deceive the eyes, just adding a layer of disguise outside the body, and the way of existence was still in human form. Once that layer of disguise was broken by external force, the invisibility ability would also be broken.

  Compared with that, Light Escape was much more advanced.

  Even if a powerful being could detect something unusual, facing a ray of light, they probably wouldn't associate it with a human.

  "Well, having no real entity is to fuse with the apostle. Liuguang's ability is actually used on the apostle."

  At this moment, Chen Yue understood why the forms of the two demonic servants were so strange. Although Anying hadn't shown its ability yet, as twin demonic servants, their abilities should be similar. And the most special point of their first ability was that it needed to fuse with the apostle to be displayed.

  While pondering, Chen Yue suddenly felt a sense of tiredness. He was stunned for a moment in his heart and then realized that it should be Liuguang's reaction.

  "It seems that using the ability of Light Escape consumes a lot of its energy." Chen Yue thought.

  In the next moment, the light that Chen Yue had transformed into loosened and recondensed into his human form. Liuguang also flew out of Chen Yue's body, looking tired.

  "Chen Yue, you're finally back. I thought you had disappeared."

  Seeing Chen Yue reappear, Yun Jing immediately rushed over in surprise. The attachment in her tone was obvious to anyone who heard it.

  Chen Yue smiled and nodded, comforted the somewhat panicked little one a few words, and then explained the situation just now.

  "Let's try it again and see how exactly this Light Escape is and what limitations it has." After understanding the reason, the panic in Yun Jing's heart was immediately swept away, replaced by a strong spirit of research.

  Chen Yue also had the same intention.

  After some research, the two reached a preliminary conclusion.

  The time of Light Escape was only one minute at most. If there was strenuous movement during the period of transforming into light, it could only last for 5 seconds.

  However, this should be because Liuguang was only at the first rank of the third star. When its rank increased, the duration of Light Escape could also be extended accordingly.

  The advantages in the light-transformed state were also extremely obvious. The speed was twice that in the human state, and this state was very difficult to be interrupted, so safety could be fully guaranteed.

  If encountering a primeval beast as powerful as the Two-Headed Giant-Toothed Leopard, even if unable to defeat it, after entering the light-transformed state, one could maintain a safe time of up to one minute.

  "I wonder if it can still be detected after using Light Escape?"

  Chen Yue was lost in thought. Yun Jing could detect some traces when using the True Vision Pupil with psychological preparation. He didn't know how other apostles would be. If they couldn't detect Chen Yue's light-transformed state, then he would already be in an invincible position.

  "Liuguang, Light Escape."

  After several experiments, Liuguang was extremely tired. It only recovered a bit after swallowing several pieces of life essences one after another. However, it wasn't without benefits. After several run-ins, it could respond to Chen Yue's orders five times out of ten.

  Achieving such results in such a short time, although it was partly due to the environment of the trial ground, Chen Yue was already proud enough.

  After transforming into light again, Chen Yue had a thought and flashed out of this room.

  Where there was light, one could pass through. This was one of the conveniences after transforming into light. In the trial ground where there was no night, this ability was even more precious.

  In the moving state, the time of Light Escape was halved. However, with these 30 seconds and the speed in the light-transformed state, it was enough for Chen Yue to make a round trip on the next floor.

  In the corridor on the forty-ninth floor, several apostles were preparing to return to their rooms. Chen Yue walked leisurely in front of them, but none of them noticed him.

  Even when Chen Yue flashed into one of the rooms, a third-level apostle inside didn't notice Chen Yue's arrival at all. Moreover, he had summoned his own demonic servant, but that three-star demonic servant didn't seem to notice Chen Yue's existence either.

  "Almost invincible..." One could imagine that with Light Escape, although there was a time limit, most places were already defenseless against him. With his powerful close-combat ability and the abnormality of the Blade Beast, if Chen Yue approached silently, probably no apostle could survive when Chen Yue launched a sudden attack.

  Just when Chen Yue's heart was surging with excitement, the three-star demonic servant in that room suddenly showed an alert look.

  At the same time, the fluctuation of energy condensation also appeared on it.

  "What's going on?" The apostle immediately noticed the abnormality.

  "Could it be..." Looking at this scene, a flash of inspiration came to Chen Yue's mind. Immediately, he forcibly suppressed his fluctuating emotions and became as calm as an ancient well.

  Sure enough, with this, the three-star demonic servant scanned around suspiciously but no longer gathered energy.

  With a thought, Chen Yue flashed out of this room.

  "It seems that there are still flaws. There can't be any emotional fluctuations when transforming into light. Otherwise, it's easy to be detected by the demonic servant." After returning to the room, Chen Yue analyzed the abnormality just now and immediately reached a conclusion.

  After all, demonic servants were high-level creatures and not so easy to deceive. Apostles, limited by themselves, were very difficult to detect where Chen Yue was, but demonic servants were completely different.

  The human form and the light-transformed form were completely different things. How could light with emotional fluctuations still be considered light?

  If it was really impossible to be detected from beginning to end, then this ability would be too heaven-defying.

  It was very difficult to maintain a state of neither sorrow nor joy all the time.

  "Indeed, it's very difficult. However, if it's outside the city, in a relatively complex environment, the problem won't be that big." Chen Yue was silent for a while, and suddenly a sharp cold light shot out from his eyes:

  "It's time to deal with them."

  ...