The battle on the military academy playground has entered the most intense moment. After some tests, everyone has some understanding of each other's strength, and their trump cards have begun to be used one by one, hoping to achieve success in one blow and kill the opponent.

Everyone's eyes were attracted by the six-person battle on the playground, only the eyes of Han Dong and Princess Xiya were still locked on Yanlong Ji'ant.

At this time, Ji'ant seemed to notice a strangeness, and felt that danger was slowly coming. He seemed a little irritated. He couldn't help but stand up from the ground and let out a series of low dragon roars.

"His Excellency Ji'ant, this is the Duchy of Yanlong. Nothing can hurt you. Please be calm!" Grand Duke Yanlong said in a gentle tone.

Yanlong Ji'ant seemed to trust Grand Duke Yanlong very much. After looking at him, he nodded, closed his green eyes again, and began to practice.

However, in Han Dong's eyes, wisps of black aura were slowly seeping out from the ground. Every time these black auras rose by one meter, the color would become dimmer. By the time they rose to the ground, they had turned into five-color, tasteless auras, which were simply unaware of.

After these auras rose to the ground, they did not dissipate, but slowly condensed towards the rock dragon Ji'ant. The moment these auras came into contact with Ji'ant, Ji'ant's original keen perception suddenly seemed to be blocked, and he felt that the ground was warm and very comfortable, and he didn't even want to leave here.

When Jiant suddenly stood up, Princess Xiya's face became very ugly, but if she had a magic pattern on her face, it would be difficult to detect the change of expression without looking carefully. At this time, Jiant continued to lie down in the same place with a comfortable face, and a smile appeared on the corner of Princess Xiya's mouth.

At this time, Han Dong was staring at Yanlong Ji'ant's body, more than ten meters underground. He had to use the Eye of Mobius to see the entire formation clearly.

At this time, Han Dong's eyebrows were slightly frowned, and it seemed like he was frowning, but in fact, Mobius's eyes had opened a little and were looking at the ground where the rock dragon was crawling.

"This formation is so exquisite that it is terrifying!" Han Dong looked at the dense link patterns and hundreds of formation nodes, and was shocked, and he was also a little bit of joy.

You know, as a formation master, it is a very happy thing to encounter a formation that you have never seen before.

It's like a top student seeing a complex math problem, and always has the urge to solve it, and she can't help but try to solve it.

At this time, Han Dong's attention had shifted from the battle on the playground to this mysterious formation. Although this formation was extremely mysterious and complex, Han Dong felt a little familiar in a certain part of it.

"This small part of the formation seems to represent enslavement and control..." Han Dong stared at the familiar part and began to carefully identify it.

It’s like when doing the questions, you should first sit up from the part you know, slowly deduce it, and go down step by step, and maybe you can solve the entire question.

After all, all the knowledge points in a question are related to each other, and there are no irrelevant formation spiritual patterns in a formation. After clarifying the familiar spiritual patterns, you can delay from these familiar spiritual patterns. As long as you have enough formation knowledge, even a skilled formation master can see through and solve it.

However, Han Dong was just a high-level formation master at this time, and the formation knowledge he mastered was not enough to completely break this formation, but after careful study, he could also learn from the same principles and improve his formation proficiency.

If Han Dong is in the nightmare world at this time, he will definitely receive a prompt like "You are studying an unknown formation, and the formation proficiency is improved by 1 point."

At this time, on the military academy playground, three rock dragon guards suddenly gathered together. At the same time, a terrifying aura burst out from the three of them, as if a force had been blocked in their bodies before, but now it was suddenly released.

At the same time, a gray aperture appeared at the feet of the three Rock Dragon Guards, which seemed to grow under their feet. As they moved, the aperture also moved.

"Formation? Another Formation?" Han Dong's eyes lit up, and his eyes temporarily moved away from the formation under the Yanlong Ji'ant, which was constantly emitting black aura, and moved to the three Yanlong Guards.

"Using a special energy, the power of the three people is penetrated. As for the specific effect, it depends on the next battle..." Han Dong touched his chin and temporarily stared at the three rock dragon guards.

As soon as the formation was released, the three rock dragon guards suddenly increased their momentum. They were originally just the Star-breaking Realm. With the blessing of the formation, the auras of the three people were actually integrated and instantly increased to the Star-Changing Realm.

The gap between the two realms immediately caught the three challengers of the Demon Clan off guard. The situation that was originally evenly matched was instantly broken, and the three challengers of the Demon Clan were immediately at a disadvantage. It was only a matter of time before the failure was done.

However, even so, the three challengers of the alien demon race were still insisting, as if they were unwilling to admit defeat, but in fact they were delaying time. At this time, Princess Xiya held the corner of her clothes tightly with her right hand. The Dragon Control Formation had just been triggered. Now that the battle ended, the Rock Dragon Dragon would definitely leave with Rock Dragon Giante. If the formation was not fully implemented and its power was not enough to tie up Rock Dragon Giante, then everything she did would be wasted.

"Even if you only have one breath left, you must hold them tightly until the moment the formation is activated!" Princess Xiya said in her heart.

All this was explained to the three demon challengers long before the challenge. There was no need for Princess Xiya to remind her at this time that the sudden outbreak of the three Rock Dragon Guards was outside Princess Xiya's plan, but at this time everything was temporarily under Princess Xiya's control.

"Dragon energy is dragon energy!" Han Dong finally discovered the strange power contained in the formation performed by the three rock dragon guards. It was this power that linked the aura of the three people together, and instantly elevated to two realms to reach the Star Transformation Realm!

"Dragon energy?" Su Zhen, beside Qin Lan, showed a look of surprise in her eyes. The dragon energy is the unique aura of the giant dragon clan, and even other dragon clans with the bloodline of the giant dragon could not possess it.

But Han Dong said that the three Rock Dragon Guards were able to use dragon energy, which surprised Su Zhen and thought he had read it wrong.

"That's right, it's indeed dragon energy!" Han Dong said affirmatively: "The three of them didn't know what method they used, and they actually stored the dragon energy in their bodies and released it directly when needed. However, the dragon energy in their bodies was like rootless wood and sourceless water. Once consumed, it would be gone..."

"Shipman Yanlong, the three of them have another identity as the Shipman Yanlong. Could it be..." Su Zhen seemed to think of something and suddenly exclaimed in a low voice.

"Haha, the generation of Master Yanlong has not found a way to become a dragon knight, but he has found the dragon energy emitted from the body of the Rock Dragon and stored it in his personal body. Some kind of formation must have been used here..." Han Dong's face showed a look of admiration and said in a low voice: "There must be a formation master beside Master Yanlong, at least a formation master. Otherwise, it would be impossible to create such a powerful formation..."

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Chapter completed!