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"By the way, I don't need it myself, but it seems that it can be handed over to the four ghost kings?" Xu Yang's eyes lit up.

The four ghost kings themselves rely on devouring remnant souls to strengthen themselves, and the more fierce the remnant souls, the more great the supplement for them, and this soul crystal nucleus is very suitable for them to use.

Thinking of this, Xu Yang urged Zhenxuan Pagoda, took out a scroll from it, and unfolded it with a hula. Four rays of light of different colors shot out and fell to the ground, turning into the appearance of the four ghost kings.

"It's really depressing that the master hasn't summoned me for a long time. The Crying Ghost King said pitifully to Xu Yang.

The other three ghost kings nodded one after another, and it seemed that during this time, they had bent over the scroll, making the four ghosts suffocated.

Xu Yang said: "Since I came to Zhongzhou, I haven't had a chance to release you, but this time it is good to summon you to appear." ”

What Xu Yang said was the truth, when he participated in the Xiaotianlu Trial, his every move was monitored by the Ten World Lords, how could he dare to release the four-headed king-level Yin Ghosts? You must know that cultivators and Yin Ghosts are natural enemies. When he was in Yingzhou, the evil emperor Luo Baishui knew the roots of Xu Yang, and he also knew that the four ghosts were subservient to Xu Yang, so he naturally would not interfere more. Others are afraid of the name of the evil emperor, and they will not come to offend Xu Yang. However, it is different in Zhongzhou, these world-honored people are not in the mood to listen to Xu Yang explain so much, and when they see the king-level big yin ghost, they will definitely turn it into ashes with one palm.

After that, he went to southern Xinjiang, and Zou Xingyun walked with Xu Yang. Considering that it would take a lot of effort to summon the Yin Ghost to come out, Xu Yang did not do it. Later, it was the battle of the Five Uniques, and then until now, when he was exploring the underground labyrinth, he was separated from his fellow disciples, Xu Yang was alone, and the four ghosts were able to see the light of day again.

"This is Zhongzhou, the rich Cheng dù of Xuan Qi is really much better than a small place like Yingzhou. The Ebony Ghost King looked around and exclaimed.

"Compared to this. What is the benefit of what the master said?"

"Look. Xu Yang took out a jade box from the storage ring and opened it immediately.

A soft white light shone out, illuminating the entire ruined burial chamber. Four blazing white soul crystal nuclei lay quietly in the jade box.

"What, what a strong remnant soul power!" The four ghost kings, like gourmets seeing delicious food, gathered around together.

"This is after the death of an alien powerhouse in the barbarian era. The soul crystal nucleus that remains, after you devour it, your strength should be improved. Xu Yang explained.

"Thank you, master!" the four ghost kings cheered in unison, each snatching a blazing white soul crystal nucleus and swallowing it directly into their mouths.

A "bobo" spiritual power poured out from the soul crystal nucleus, and it hit the four ghost kings. However, the four ghosts are all ghost kings. Those who play with the power of the mind, they can easily defend against the impact of the mind.

Resentment energy of different colors burst out from the bodies of the four ghost kings, completely enveloping the blazing white soul crystal nucleus, dissolving the remnant souls in it, and devouring these mental powers.

It didn't take long for the four ghost kings to devour successfully. Their eyes were bright, and it was clear that they had benefited greatly.

The Chili Ghost King licked his lips and said, "Master, are there any more?" ”

"Yes, just by absorbing this soul crystal nucleus, I feel that there are signs of breaking through to the middle stage of the ghost king, what a divine thing. The Ebony Ghost King also said approvingly.

"There is another one here, but it is just a soul crystal nucleus left by a Xuanhuang-level master. Xu Yang said.

"Xuanhuang level?!" The eyes of the four ghost kings all lit up, but then they dimmed again.

"The hosts. Of course, the soul crystal nucleus left by the Xuanhuang master is good, but we may not have this ability to resist the soul impact of it. The Crying Ghost King said with some embarrassment, she looked at the cyan soul crystal nucleus in the cloud sarcophagus, and said with some reluctance.

"It doesn't matter, you all have soul imprints on me, and you can completely achieve the common power of the mind and spirit. With the strength of my mind. With the addition of the four of you, it should be enough to resist the mental impact of the Xuanhuang powerhouse. Xu Yang said.

"I'm afraid not...... Ebony Ghost King shook his head and said, "The master's spiritual strength should also be at the level of the Xuan King, plus the four of us." That is, five Xuan Emperor level, devouring the soul crystal nucleus of a Xuan Emperor master, it is too risky. ”

"I agree with the master's opinion, it's better to give it a go, wealth and wealth are in danger," the Chili Ghost King's eyes flashed red, "If the devouring is successful, we will immediately improve to a small level, and our strength will be greatly improved." ”

The four ghost kings each spoke and expressed their opinions, only the Chili ghost king wanted to take a risk, and the other three ghost kings all advocated being serious.

Xu Yang smiled slightly: "It's okay, leave it to me." ”

When the four ghost kings recognized Xu Yang's mental power when they were still in Yingzhou, how did they know that when Xu Yang was in Zhongzhou, when he was studying and solidifying the Xuan Array, he had made a breakthrough in his mental strength, and now he had been promoted to the Xuanhuang level?

"Come, each exude the strength of their minds and enter my sea of knowledge!" Xu Yang sat down cross-legged in front of the coffin.

The four ghost kings absolutely obeyed Xu Yang's orders, and no matter how dangerous they were, they sat cross-legged around Xu Yang directly, each shooting out their mental power from the center of their eyebrows, and under Xu Yang's guidance, they entered Xu Yang's sea of knowledge.

"I haven't seen you for a long time, and the master's knowledge is much broader?" the Cangming Ghost King was a little surprised.

A blue light flashed, and Xu Yang's mental incarnation appeared in front of the spiritual incarnation of the four ghost kings, and he conjured up a blue shirt, floating out of the dust: "Everyone, get ready, I am about to pick up the soul crystal nucleus of that Xuanhuang-level master and enter the sea of knowledge!"

The four ghost kings should all be in unison, and their faces were solemn for a while.

The fog rolled over the sea of knowledge, and suddenly the fog dispersed layer by layer, and a round of cyan sun appeared in Xu Yang's sea of knowledge space, which was still a little illusory at first, and then gradually solidified.

"Woo Woo ......"

At the moment when the cyan sun was completely condensed, one cyan light, like a sharp sword, shot towards Xu Yang and the four ghost kings in the sea of knowledge.

"Connect your mind with me and resist the impact of your mind together!" The blue-shirted Xu Yang let out a low sigh, and the four ghost kings' mental incarnations each stretched out a palm and pressed it against the back of the blue-shirted Xu Yang.

A dazzling blue light shot out, turning into an arc of light, blocking the rushing blue light sword.

"Huh...... The master's mental strength seems to be stronger than he imagined?" the Ebony Ghost King said, "It's a good sign that he actually withstood the first wave of attacks. However, the mental impact will be even more severe in the future, so be careful. ”