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The Great Emperor Heixuan had completely disappeared from the sight of the two of them.

"Emperor Tribulation, it's too scary. Facing him, I feel like I'm facing an unattainable mountain..." Chu Tianxing's face was very ugly. Such a strong person is an enemy, which is very troublesome. thing.

"Are you afraid?"

"Haha, how is it possible! You old guy is not afraid, why should I be afraid?" Chu Tianxing laughed.

"After the ancient seal is broken, our realm breakthrough will also become easier. I believe that soon, we will also usher in the emperor's catastrophe." Han Kong looked at the sky and said, "Perhaps, the next era is coming soon, so farewell !"

……

All over the defense line, there were wild beasts attacking wildly, but those places that were not supported by top-level beasts were not only not breached, but instead provided a lot of experience for Lin Xuan's troops.

Judging from the current battle, Lin Xuan seems to have taken advantage of everything.

However, the other party did not have any loss, and everything was just the beginning.

Under the guidance of Emperor Heixuan, the attacking beasts retreated one after another, leaving the attack range of Seven Hearts and Thirteen Cities.

"Master Heixuan, why didn't you leave those two peak Martial Emperors behind?" An Mielongdi looked puzzled, obviously Heixuan had an absolute advantage just now, but he chose to retreat.

"If it is possible, how can this emperor let them go?" Heixuan Emperor shook his head and said, "If you really confronted them head-on just now, whether you can win or not, even if you win, this emperor will not be able to kill them , but it will damage the dragon body of this emperor, so this emperor will retreat first."

"You mean, your dragon body hasn't broken the boundary yet?"

"That enchantment is very strange. The stronger it is, the more difficult it is to break through. Moreover, the sealed areas of other empire regions have not been broken. Only the Sacred Heart of the Sacred Heart Empire has been absorbed by someone who does not know. We have Opportunities come." Emperor Heixuan said, "Right now, we can only come down in batches for the time being. The most important task for those who come down first is to find the core of the formation and destroy them one by one."

"The core of the big formation?"

"Then Han Shengxin is indeed a character. When arranging the formation, he considered not just a sacred heart." Heixuan looked outside the cave and said, "Under the influence of the seal, this emperor cannot leave for a long time. Dragon body, next, this emperor wants you to find a few formation cores and destroy them, do you understand?"

"I'll wait to understand!"

"The emperor, I will wait for your good news over there." The Great Emperor Heixuan turned into a black light, rushed to the sky, and finally dissipated in the clouds.

……

Seven Hearts City.

"Commander, Yunru has already calculated the critical range of sister Mengxuan, let her try to break through." Yunru opened the door of the combat laboratory, ran towards Lin Xuan, and said excitedly.

"Mengxuan, how are you? Who have seen you?"

"Lin Xuan!" Chu Mengxuan hammered Lin Xuan's chest, and said angrily, "Sister Yunru was the only one who did it all by herself. She was sweating profusely, and you don't care about others!"

Lin Xuan scratched his head in embarrassment, and looked at Yunru.

"Commander, Yunru isn't tired at all!" Seeing Lin Xuan looking over, Yunru said hastily.

"Thank you!" Lin Xuan walked over with a smile, touched Yunru's little head lightly, and said, "In the future, pay attention to rest and don't have to work all the time, you know?"

"Thank you, Commander, for your care!" Seeing Lin Xuan caring for her so kindly, Yunru felt as sweet as honey.

"Then let's start now, Mengxuan."

"En!" Chu Mengxuan nodded lightly, and then sat on the energy gathering platform again.

The huge power from the nuclear reactor was transmitted, and after passing through the energy converter, it was transformed into traces of pure spiritual power, which began to be input into Chu Mengxuan's body.

When it reached the critical range, Yunru immediately stopped instilling spiritual power.

"This is the opportunity to break through!" Chu Mengxuan seemed to have seen the bottleneck of her own realm, as long as she exerted more strength, she could break through the shackles and become a strong Emperor Wu!
Dots of aura wrapped around Chu Mengxuan, forming a huge vortex of aura around her.

"That's it, Xiaoxuan, is she going to break through too?" Chu Tianxing, who just flew over from the outer city, stayed in the distance, watching Chu Mengxuan break through quietly.

"Damn it, why can't it be broken!" Chu Mengxuan tried many times to break through the shackles of the realm, but every time she lacked strength.

Realm shackles are a very precise layer of energy. If it is not controlled properly and the force is too strong, it will cause the realm to fluctuate, and in bad luck, the strength will even be reversed.

If the strength is too small, it will not be broken at all.

"Yunru, what happened to Mengxuan?" Seeing that Chu Mengxuan was still not going well, Lin Xuan became nervous again.

"I have found the critical range. If there is no accident, Sister Mengxuan has already seen the shackles of her own realm, but she has not broken through..." Yun Ru just stared at the data on the screen nervously, and said.

"Why is that?"

"Compared to Leader Chu, Sister Mengxuan still has a lot to sharpen, so it will be difficult for her to break through the big realm." Yunru explained.

"So that's the case, I think, even if the principle is thoroughly researched, it can't be so simple, everything depends on the person!"

At this time, Chu Mengxuan's surrounding aura had begun to riot.

The neat spiritual vortex also began to become disordered, and Chu Mengxuan's face became more and more ugly.However, Lin Xuan knew that at this moment, he must not intervene.

Realm breakthrough, not only the breakthrough of the spiritual power realm, but more importantly, the state of mind, will get a perfect sublimation.

"Damn it, why can't I break it!" Chu Mengxuan tried many times, but still couldn't break the shackles of the realm.

"No, Chu Mengxuan, you have to calm down, you can't hold Lin Xuan back!" Chu Mengxuan kept encouraging herself, and slowly thought of what Yunru told her about the critical point of spiritual power.

As if she understood something, Chu Mengxuan slowly put her palm on the shackles of the realm, and then, starting from the critical point, slowly increased her strength, and kept an eye on the changes of the shackles.

This method of slowly increasing spiritual power is very painful. At the stage of breaking through the realm, almost every minute and every second feels like a burning fire. It is very rare to be able to endure the slow increase of spiritual power.

Enduring the intense burning sensation all over her body, the strength of the spiritual power in Chu Mengxuan's hands increased at a very even speed. At a certain moment, the realm shackles suddenly loosened.

"It's now!" Chu Mengxuan made a decisive decision, and immediately covered her whole body with this intensity of spiritual power, and then rose into the air, and the surrounding spiritual vortex turned into bursts of air, slowly flowing into Chu Mengxuan's body.

Chu Mengxuan slowly opened her eyes, and a fierce aura swept out.

Another strong Martial Emperor was born!