Gu Xu didn't come in alone.

Wang Jian followed behind him, staring at the drawings in his hand as he walked, his brows furrowed, as if he was pondering something.

Gu Xu stepped over the threshold, turned his head to Wang Jian and said, "Prince, didn't you say before that if you can find someone who has mastered the 'Heavenly Dragon Realm' to do experiments, you will have a better grasp of this 'Zhou Tian Star Dou Great Array'?

"I just have a suitable test item in my hand."

As he spoke, he pointed to Xiao Shangyuan in front of him.

Wang Jian's eyes looked at Xiao Shangyuan, and some complicated emotions couldn't help but rise in his heart.

Not long ago, he was also the national teacher of the Great Qi Dynasty, drawing talismans and cracking formations for the prince of Great Qi, and charging into battle under his command.

However, in the blink of an eye, the identities of the two have changed dramatically.

Wang Jian became Gu Xu's guest, and Xiao Shangyuan became Gu Xu's prisoner.

As soon as he heard the word "experiment", Xiao Shangyuan couldn't help but shiver, and his whole body was cold to the bone.

The desire to survive once again drove all the distractions out of his mind and took over his mind.

Subconsciously, he fell to his knees with a "plop", kowtowed his head fiercely towards Gu Xu, and begged incoherently: "The emperor spares his life! The villain knew that he had offended the emperor before, but he didn't want to die here. As long as you are gracious, the villain is willing to make cattle and horses for you......

"Get up," Gu Xu said, his tone calm, "I didn't say I wanted to take your life, I just wanted you to cooperate with us and test the effect of a formation."

Obviously, Xiao Shangyuan was deeply frightened by the word "experiment".

He fell to his knees, motionless, and after a long while, he slowly got up from the ground and asked cautiously, "What does the Emperor need me to do?"

"Unfold your 'Heavenly Dragon Realm,'" Gu Xu commanded, "with all your might."

The "Heavenly Dragon Great Array" of Luojing City and the "Heavenly Dragon Domain" of the royal family members have the same origin, and they have many similarities in the laws of the Great Dao. Therefore, it can help him test the effect of the "Zhou Tian Star Dou Great Array", find problems in advance, and fill in the gaps in time.

Xiao Shangyuan took a deep breath.

As his mind moved, an invisible force field suddenly burst out from his body, instantly occupying the sky above the entire side hall.

In an instant, the air in the side hall became dull and solemn, the weight of all objects and furniture seemed to have increased several times, and the floor made a violent "creaking" sound under the shroud of this force field, as if it was about to collapse in the next second.

If ordinary people are placed in such an environment, their bones will inevitably be shattered, their flesh and blood will be shattered, and they will be crushed to death by their own weight.

But Gu Xu and Wang Jian still looked indifferent and were not affected in the slightest.

Gu Xu stepped forward slowly, and with a flick of his robe, more than ten talisman seals flew out of his "Idle Cloud Residence", quickly forming a halo-like array in mid-air. These sigils shimmer with a silvery white light, like stars orbiting in a predetermined orbit, brilliant and mysterious.

Wang Jian focused on his gaze, reciting the incantation silently, and at the same time infusing the true element into the formation.

He didn't have many true elements to input into the formation, only the strength of an ordinary Fifth Realm cultivator.

But this seemingly faint True Yuan drove the formation to shine, enveloping the entire side hall in a dazzling sea of light.

The heavy sense of oppression brought about by the "Heavenly Dragon Domain" that Xiao Shangyuan had just exhibited also disappeared in an instant in front of this majestic star power, as if the originally suffocating weight was nothing more than a papier-mâché trick.

In an instant, Xiao Shangyuan felt a whirlwind in his mind, and his legs were also weak. His face turned pale, he staggered backwards, and finally fell to the ground.

Wang Jian had a look of surprise on his face.

The Heavenly Dragon Realm of the Great Qi Imperial Family has always left him with a powerful and sacred impression.

I didn't expect it to be disintegrated so easily by this simplified version of the "Zhou Tian Star Dou Great Array".

However, Gu Xu showed dissatisfaction on his face.

"It's not enough, we have to do it again

Some adjustments ......"

As he spoke, he took out his pen and wrote in the air.

Wang Jian smiled helplessly.

Recently, in the process of researching and improving the "Zhou Tian Star Dou Great Array", he has long been accustomed to Gu Xu's almost paranoid perfectionist style.

Gu Xu has always imagined the worst-case scenario. In his deduction, both the "Celestial Dragon Array" and the "Tai'a Sword" were more powerful than they actually were. He was demanding of his formation to the point of almost compulsion, unable to tolerate the slightest flaw, not allowing even the slightest possibility of defeat to exist.

It's just that since Gu Xu is his own lord and ancestor, Wang Jian can only cooperate with his orders.

Soon, Gu Xu changed several details of the formation and needed to test it again.

His gaze once again fell on Xiao Shangyuan, the prince of Great Qi.

Xiao Shangyuan has been made full of blood and blood, and Zhenyuan is scattered.

He looked up at Gu Xu and said weakly, "Emperor, can you let me rest for a while?" I don't have much True Yuan left, so I'm afraid I won't be able to cooperate well with you......

Gu Xu glanced at Wang Jian beside him, and instructed lightly, "Did the prince bring the 'Hui Yuan Dan'?"

"Bring it, Emperor." Wang Jian nodded.

"Hey this Royal Highness the Prince," Gu Xu commanded, "Let him cheer up quickly."

"When you are young, you should work hard, how can you just lie flat on the ground casually?"

Hearing his words, Wang Jian took out a yellow and mellow elixir and handed it to Xiao Shangyuan.

Xiao Shangyuan took the pill and wanted to cry without tears.

He thought silently in his heart, guessing that this might be because of the past chasing and killing, which caused Gu Xu to be difficult to let go, and deliberately took this opportunity to take revenge on him.

After swallowing the pill, Xiao Shangyuan only felt that the internal organs were re-injected with heat, and Zhenyuan slowly regained its condensation.

He once again went all out to unfold the "Heavenly Dragon Domain" and assist Gu Xu in testing the formation.

But Gu Xu was still not satisfied with the effect of the formation.

So, in this whole afternoon, Gu Xu changed his formation more than thirty times, fed Xiao Shangyuan more than thirty pills, and defeated his "Heavenly Dragon Domain" more than thirty times.

Under such repeated tossing, by the time the sun set, Xiao Shangyuan had already squeezed every drop of true yuan dry, and he was completely exhausted.

He lay on the ground, his pants soaked with sweat, and his face was as pale as a dead man.

On the side, Gu Xu was still full of depression and grim.

Looking at his frowning appearance, it seemed that he still felt that the formation was flawed, and he wanted to drag Xiao Shangyuan up from the ground to continue the experiment.

"Emperor, rest," Wang Jian persuaded from the side, "If this continues, this great prince will probably die of anger."

Gu Xu pondered for a moment, and finally nodded.

"The 'Zhou Tian Star Dou Great Array' is the key to our defeat of Luo Jing, and we must ensure that nothing goes wrong." He said seriously.

Subsequently, he walked out of the side hall with Wang Jian.

Xiao Shangyuan was paralyzed

fell to the ground, looked at the backs of the two leaving, and breathed a long sigh of relief.

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