This time, the Great Demon King also accumulated his true qi for a while, and when his aura rose to a high point, he roared and swooped towards the enchantment.

This time, the Great Demon King almost used all his strength, and its body slammed into the enchantment, but the enchantment was not immediately broken, but was stretched backwards, showing a strange arc, and then there was a sudden explosion, and then the surrounding enchantment suddenly disappeared.

The Great Demon King let out a long breath and said with a smug smile: "After all, he is a young man, he is unreliable in the formation, and he will be destroyed so easily!" After speaking, he was about to raise his legs and move forward.

Almost without warning, at the moment when it had just moved forward, the space around it suddenly closed inward, and the Great Demon King was only stunned for a moment at first, not reacting to what was happening, and then, the sudden change made it completely stunned.

Because the contraction of the surrounding space did not take a long time, but happened instantly, so almost in an instant, his actions were completely controlled, in fact, this contraction was not space, but a combination of multiple true qi, this special state, in fact, was like a piece of cloth, the hands and feet of the Great Demon King were tightly bound together, making him unable to move.

The Great Demon King was shocked, of course he was unwilling to be controlled like this, so he immediately struggled desperately, trying to get rid of this restraint, but the package became tighter and tighter, and he had no way to move freely, the Great Demon King was annoyed and angry, he roared angrily, and his whole body suddenly swelled up as quickly as he was breathing, almost in a very short period of time, his body almost swelled in a large circle, and at this time, the Great Demon King was suddenly shocked. The muscles bulged violently.

Then, a deafening loud bang was heard, and then, the layer of true qi that wrapped him actually exploded violently.

That's right, it just exploded, almost without warning, this is not the result that the Great Demon King wants, because this is not the state under his control at all, but this explosion is simply close to his body, and he can't even dodge.

After the explosion, the Great Demon King's entire body was blackened, the hair on his head stood on end, his face was black, and his whole body was also full of flesh, he stood in place for a long time before he suddenly opened his mouth to speak, but as soon as he opened his mouth, a cloud of black smoke came out of his mouth.

The Great Demon King shouted in a hoarse voice, "Damn, when I catch you, I must break your body to pieces!"

After leaving the valley, Yun Tian also traveled all the way, quickly rushed to Star City, and when he arrived at Star City, he found that the figures in Star City were shaking, and the gate began to close slowly, there were few people at the city gate, and the rest of these people were also running towards the city gate quickly.

Yuntian hurriedly accelerated, and rushed to the city when the city gate was closed.

Not long after he entered the city, he heard countless sounds, and then, in the center of Star City, a huge probe suddenly popped out, this probe was extremely thick, and it had been rising rapidly, but in a moment, it had risen to a height of dozens of meters, like a completely enclosed giant tower without windows.

At the top of this probe, there is a huge circular sphere, as the probe stabilizes, the sphere begins to flood with energy fluctuations, this energy fluctuation is quite regular, but also layer by layer in the air to the periphery, but the interesting thing is that the transmission of this wave is not infinitely extended, but gradually transmitted to the edge of the city wall, then slowly stopped, and then, began to turn down, in a parabolic arc fell to the ground. In this way, the energy emitted by the sphere happened to form a huge energy shield on the periphery of Star City.

There was still such a thing in Star City! This discovery made Yun Tian dumbfounded, he knew about this kind of energy cover, but he never thought that it would appear in an isolated city like Star City.

This energy cover is definitely not simple, this is what Yun Tian once saw in the Dayan True Formula, this kind of thing recorded in the Dayan True Recipe is called the Qingtian Huagai Array, in fact, it is a composite formation, the formation generally relies on the leylines to maintain, because once it is opened, the energy required is quite huge, generally only rely on some spirit stones to maintain, then I don't know how many spirit stones to consume is enough, so to really build this kind of formation, it is necessary to choose a larger leyline to build, what is the attribute of the leyline, and what kind of attribute the completed formation has。 Of course, because it is a formation, as long as the formation base is not destroyed, the maintenance of this composite formation is not difficult, all it needs is to ensure the stability of the energy source, as long as there is a stable energy source, this formation can be maintained.

It is more difficult to destroy this formation, because its formation base is often well protected, and the protection strength of the formation base is even higher than that of the peripheral formation, unless there are special means, it is extremely difficult to destroy the formation base.

In addition to destroying the formation base, there is another method that is more violent, that is, to directly use external force to break the formation shield and hit it hard, but this method is too difficult, which requires the consumption of a huge amount of true qi, and at the same time, the formation breaker is extremely powerful, even so, the difficulty of breaking the formation is quite high. The most important thing is that such a break is very likely to cause unexpected changes, and may even cause counter-damage to the breaker himself, so it is generally not recommended to break the formation by force in this way.

It is precisely because of this that this Optimus Array is also known as the Iron Bucket Array, which means that it is as strong as the siege of the Iron Pass.

However, Yun Tian knows that the so-called firmness is only relative, in fact, any formation has flaws, it just depends on how much ability the arranger has and what level of formation can be arranged. A formation mage with an extremely high level of formation can arrange a nearly perfect formation, while a formation mage with a poor level of formation may be full of flaws in the eyes of the masters. He believed that the Great Demon King was not even so easy to break the temporary formation he hastily arranged, which meant that he knew almost nothing about the formation, and it was obviously impossible to break the formation by means, so the other party would definitely choose to break the formation violently.

Yun Tian didn't know if this formation could withstand the attack of the Great Demon King, but it was not so easy for the other party to break the formation, because the formation of this Qingtian Huagai Formation was arranged more exquisitely, and it should be arranged by a very amazing formation mage, even if it was an opponent of the level of the Great Demon King, it was not easy to break it.

Just as he was thinking about it, he suddenly heard a shouting on the city wall, and the Optimus Canopy Array was suddenly strengthened, and Yun Tian realized that it was probably the Great Demon King who had come.

Sure enough, as he thought, after a while, he heard a familiar howl from outside the city wall, and sure enough, the Great Demon King had arrived here, looking at the other party's shout, how did he seem to be frustrated there, and he looked annoyed and angry.

However, with the arrival of the Great Demon King, Star City has been completely closed, and everyone is discussing countermeasures and how to deal with this terrifying enemy.