Qingshi's method is that he himself retrograde back to the Blue Dome Prison, before he goes back, he will build a magic circle in the Sea Eye Prison, this magic circle must be taken care of and activated and operated in a timely manner, and this can only be done by Gray, not Chubby.

When he builds a circle in Blue Dome Prison and activates it, the circle in the Sea Eye Prison will sense it, and Gray can follow the steps explained by Bluestone to control the circle to start and operate, and the two circles will run at the same time, and a passage connecting the two prisons can be opened, so that the Yuan Force of the Sea Eye Prison can enter the Blue Dome Prison, so that the Blue Dome Prison will also become a Yuan Force space. Of course, Gray will be able to follow the passage.

"Brother Ge!" After explaining to Gray, Bluestone asked, "What do you think?" ”

"Very well," said Gray, "but what about after getting over there and breaking through the prison?" How are we going to get along? ”

"This requires Brother Ge to make a high profile," Qingshi said with a smile, "Brother Ge needs to first swear never to harm the creatures of the Heavenly Dragon World, and then, Brother Ge also needs to let go of your mind and let me use soul magic to regulate your emotions, so that your heart will never violate your oath." Don't worry, I will never take the opportunity to harm you, before that, we will form an alliance with blood and swear not to hurt each other, and I will also promise Brother Ge that one day I will definitely take Brother Ge out of the Tianlong World and return to the Demon Domain. ”

Gray was silent for a long time, and finally raised his head and drank the old wine with a line of fire, then wiped the corners of his mouth, stared at the bluestone and said in a deep voice: "Okay! I promise! ”

After the agreement was unified and the blood oath was made, Qingshi began to build the magic circle, the reason why it is said to be built rather than laid is because the scale of this magic circle is extremely large, and it requires many permanent building materials such as giant stones, and a large number of metal components are forged, which can never be completed with some array spirit weapons such as array sticks and flags.

Now, Qingshi's formation technique was no less than that of Yun Ge, so even within this death array, he was still able to build such a giant formation within the array.

However, it was not easy to build this circle, it took Bluestone three years to build it, during this time, Gray has been helping Bluestone, in fact, helping to build the circle is secondary, the main reason is that he has to learn some necessary array spells from Bluestone so that he can control it alone in the future.

Three years later, a huge circle rose up in the desert.

In terms of appearance, this circle is a hexagonal frame structure made of boulders, each side of the hexagonal shape is 20 zhang long, 10 zhang high, and 6 zhang thick, and they enclose a large hexagonal space.

There are 1,080 stone pillars standing inside the space, each stone pillar is three zhang high and three feet in diameter, they are evenly distributed and arranged according to a certain law, leaving only a circular blank with a diameter of about three zhang in the center, forming a hollow, that is, the reserved passage connecting the two prisons.

If it was just to consolidate the yellow sand into solid stones and pile them up, Qingshi and Gray would only be able to do it in ten days and a half months, and the most arduous work would be to install various components, array spirit weapons and spirit sources on these boulder structures, as well as to carve complex formations for each stone formation pillar, and of course necessary tests. These massive works have made Qingshi not have a day off for three years.

On the day of completion, Qingshi stood on a boulder frame of this giant magic circle, looking at the stone pillars under his feet, he was very pleased.

"That's it!" Qingshi sighed, "This has taken me a lot of effort." ”

"What is there to be proud of?" Gray said disdainfully, "Compared to the Sea Eye Circle and the Blue Dome Circle, your circle can only be regarded as a fart. ”

"Kind of fart?" Qingshi smiled, "According to what you say, this round blank in the middle is an asshole." Don't forget, you'll have to get through it to get there. ”

"Cut!" Gray laughed too, "Drill it, you have to drill it first, anyway." ”

"Haha, you're wrong," Qingshi laughed, "I came from the Eye of the Sea Eye Prison, not this 'asshole'." This asshole is a passage connecting the two prisons, you drill, I don't have to drill. ”

"You ......," Gray said, rolling his eyes, "what asshole?" Why are you talking so uncivilly? This is obviously a passage! Passage. ”

"Hahaha......" Qingshi laughed, "Brother Ge, I'm ready to leave, you have to remember the spell I taught you, always pay attention to the movement of this magic circle, if you can't operate it, fart...... If the passage can't be opened, then you won't be able to pass. ”

"I can't get through," said Gray, "and you won't be able to get out, it's not like it's going back to the way it was, what's the big deal!" Where the hell is Shengmen? How are you going to get there? ”

"Shengmen is in this yellow sand," Qingshi said, "Watch me cast a spell!" Rise! ”

Qingshi's heart moved, and he flew up to a height of two hundred feet, and then, he opened his arms and waved, and suddenly, the entire prison became stormy, flying sand and rocks.

The sandstorm stirred up by the bluestone seemed to be even more violent than Gray's, and it soon formed a huge cyclone with a diameter of three hundred zhang, whistling and spinning wildly around the bluestone.

It seems that the yellow sand of the entire desert is flying towards the bluestone one after another, and after rotating around the bluestone, it will be sprinkled on the ground one after another, and gradually, the yellow sand around the hexagonal circle begins to accumulate, and the yellow sand that falls down forms a circle with a diameter of more than three hundred zhang, enclosing the hexagonal circle, but none of them fell into the circle.

The violent sand and dust cyclone lasted for two whole days, and a hundred-foot-high annular sand mountain was piled up on the ground, and the annular sand mountain gradually began to expand outward, and the mountain became thicker and higher.

Gray really didn't understand what Bluestone was going to do, but he felt that Bluestone seemed to be washing the entire desert of yellow sand. He couldn't hold back any longer, and shouted at Qingshi: "Qingshi! What the hell are you going to do? Is it that some magic weapon fell into the desert and couldn't find it? ”

At this moment, Qingshi suddenly waved his hand and shouted at the same time: "Bright! ”

Time seemed to be stopped in an instant, only a few feet away from the bluestone, a grain of yellow sand suddenly flashed a little light in the hundreds of millions of sand grains, bluestone gently stretched out his finger to point at the shining sand, and muttered in his mouth: "A sand is a world, a dust is also a ......"

Qingshi's fingers touched the grain of yellow sand, and suddenly disappeared out of thin air.

Time returned to normal in an instant, and the speck of dust no longer flickered, and the wild sandstorm was still writhing in the sky. Gray stared at the grain of dust, trying to track and lock on to it, but in an instant it disappeared into the vast expanse of dust, never to be found.

Gray realized that Yun Ge had hidden his life in the dust.

Yun Ge's spell is indeed remarkable, and it is even more incredible that Qingshi can discover this and find it out.

The scene in front of Qingshi's eyes changed, and he appeared in the Blue Dome Prison without accident.

The empty prison was lifeless, as always. In terms of time, Qingshi has been in the Sea Eye Prison for more than one hundred and twenty years, the Heavenly Dragon World has only passed for twelve years, and the time in this Blue Dome Prison has only passed a little more than a year.

Qingshi knew that the time difference between the two prisons was doubled, so he did not delay and started to build the magic circle as soon as possible.

Despite the experience of construction, it took Bluestone two years to build the corresponding circle in the Blue Dome Prison. And inside the Sea Eye Prison Circle, Gray guarded the circle with a long wait, waiting for two hundred years.

Bluestone built the magic circle and prepared to activate it after a little test, he didn't care about making Gredo wait for hundreds of years, but he knew that time in the Celestial Dragon World was also passing rapidly, and of course he hoped to get out sooner.

Theoretically, these two prisons are a whole yin and yang, the sea eye prison is the yang plane, and the blue dome prison is the yin plane, connecting them together, that is, a process of communicating and balancing yin and yang.

On this day, Qingshi finally activated the magic circle.

As the circle activated, a faint blue light began to glow from the center of the giant hexagonal frame, within the circular hole with a diameter of three zhang, and orange light began to appear between the pillars of the stone array.

The blue light is getting more and more abundant, and the color is getting more and more intense, and the same is true for the array pillar area.

Suddenly, a breeze blew gently within the large array, rotating in a clockwise direction, and soon developed into a violent cyclone.

Soon after the cyclone formed, a strong cyclone began to appear within the blue light hole, which rotated counterclockwise, and soon formed a stream of air that rushed straight to the dome.

Although the cyclone and the air flow were colorless, the bluestone could still sense their direction and regularity, and the cyclone tore the gas in the Blue Dome Prison into the ground, and the air flow rushed out of the ground inside the blue light circle.

Bluestone saw the scene in front of him and knew that the two circles had been connected, apparently Gray received the signal and activated the circle, there was no problem with his control, and the communication circle in the Sea Eye Prison was also operating normally.

Soon, Qingshi began to feel a trace of Yuan Force in the air, and it slowly became more and more intense. As Yuan Li entered the Blue Dome Prison, the originally locked space began to loosen.

Only after the Yuan Force on both sides is balanced and the space locking effect is disintegrated can Gray be able to pass through, and it will take some time. But Qingshi knew that the first step of his plan could be said to be complete.

The speed at which the Yuan Force penetrated was very slow, and the space of the Blue Dome Prison was not small, so it took a full year for the Yuan Force of the two prisons to become the same concentration and reach a balance, and the locked space was completely restored to normal.

At this time, Gray will be able to follow the spell taught by Bluestone and enter the Blue Dome Prison from the Sea Eye Prison through the passage.

Although the two prisons were connected and the Yuan Force was gradually balanced, the time difference between them still existed, so Gray waited for another hundred years in the Sea Eye Prison to wait for this moment.

However, Gray has enough patience to wait for 100,000 years, where does he care about waiting for a few hundred more years. And he believes that the long wait is worth it, because he has finally waited for the opportunity to regain his freedom.

When Gray felt that the Yuan Force in the two prisons had reached a balance and the two sides were truly connected, he took a deep breath and resolutely jumped into the blue light hole in the center of the circle.

With Gray's departure, the Sea Eye Prison Circle could not perceive Gray, and its circle core judged that Gray had escaped from prison, and the Sea Eye Prison had lost its meaning of existence, so the circle started the self-destruction process, and the prison began to disintegrate and collapse.

The Yuan Force, which was originally used to maintain the Sea Eye Prison Circle, began to slowly return to its primitive, naturally divergent state. In other words, this Yuanshi ancestral vein, which is currently the only one in the Heavenly Dragon World and the source of the Yuan Force, has begun to release the Yuan Force it continues to generate into nature.